60+ Voiceover Marketplaces Online
Tip: Online marketplaces fees are tax-deductible
Sites below are mostly focused on US-Accented English. Projects with multiple languages, or primarily NOT US-accented English are increasing all the time. Websites that offer multiple languages or accents are generally not the best place for voice talent who only speak US-accented English to find work (clients go to websites specializing in US English when they want US English more than go to international sites).
Warning: Filmless job listings. They’ve been posting a full time “job” listing over and over for years, but no talent has ever received a reply from contacting them
Beware Showcase / Roster Scams 🖇
These sites charge you to host your demo, which you can do for yourself from your own personal free website. Some claim to promote you, but your odds of connecting with a paying client are near zero. Some coaches or training companies showcase your demo after you complete their training, but beware assigning monetary value to being showcased. It seemingly validates that you are a talent in the voiceover industry, but is really only good as a way to show off to family and friends.
Roster Scam: This variation is a legitimate recording/production company “adding to you their roster”, usually after you “update your demo for their clients”, usually by paying them for demo production. After early training companies told newcomers to offer their services to productions companies and recording studios, they were eventually swamped with contacts from poorly-trained talent, and some decided to take advantage.
Demo Roster Scam: This variation is used by recording/production companies that produce voiceover demos. They tell you that if you do your demo with them, they will add you to there roster. While they do sometimes recommend talent to clients coming to them for voiceover, they do not usually recommend completely inexperienced talent—your odds of booking a paying gig from a recommendation from the place you did your demo are low.
Ultimate Rate Guide from VORateSheet.com:
🔻 Marketplace Types (Click to view)
Types of website that help talent find work include:
- Paid marketplaces
- Volunteer organizations
- Job Search sites
- Casting Services
- Company “rosters” or “showcases”
1. Paid marketplaces
This is primarily what we cover below. Some take a percentage of whatever work you get through the marketplace (ranging from 5%-70%), others charge a fee—known as pay-to-play, or P2P.
Most of these are free. Some that have been around a long time are active and helpful, though generally the most active forums have moved to Facebook groups.
Generally, if there is a charge to join the forum, it is not worth it—often it is essentially a scam or constitutes a fee to put your info online which you could do for free at a free online website maker like wordpress.com. Some forums are a combination of forum (place for people to chat, ask questions, help others, etc.) and a marketplace (place for clients to post auditions for work they are trying to cast). Many forums that concentrate most on animation work are a combination forum/marketplace. Click here to see some recommended animation sites. If you are just starting out in animation, we recommend auditioning for multi-character fiction audiobook work instead to get paid faster for your skills.
3. Volunteer Organizations
You can provide your voice over services for free to organizations like Librivox. There is a list of these organizations at the bottom of this page. We do NOT recommend working for free. People often say they want to “get my feet wet” or “get experience”. We recommend instead working briefly at lower-paying marketplaces to build a short list of paying clients and/or auditioning for animation or audiobook work while ALSO auditioning for work on higher-paying marketplaces. Volunteer only to help others—for charitable purposes—and because you love doing it. One exception would be to volunteer on short audiobook work to be able to list yourself as an experienced audiobook talent and producer, and to gain experience using roll-and-punch functionality in Audacity (or similar software). Roll-and-punch is how you fix errors seamlessly in real time while recording, without having to to edit your recording later, i.e. your recording will be accurate to your performance standards when you are done.
Not a kind of website that helps you directly, but one that connects clients (people with the project money) with talent agents. Your talent agent then gives you the script so that you can audition for the project.
These are part of the middlemen/gatekeepers in the business that make it advantageous to have an agent.
These services are worth knowing about, because if you have an agent, you need to know that YOUR demo may be listed here for potential clients to hear. Here is an example of one of these services.
5. Recording Studio or Training Company Rosters or Showcases
There are places to list yourself that are semi-worthwhile (e.g. ProductionHUB), but a con as old as their have been actors goes like this:
B-movie music begins playing and Sam, the cigar-chewing grizzled old con artist walks onto stage “Hire me and I’ll make you a star, kid! Everybody in this industry knows Sam!”
In the VO industry, the way it works is not necessarily a scam, but usually the same difference. They promote how they will get you work in order to get your money…but no one they “promote” gets any work. Usually it’s an offer to promote you via a “listing” or through their “contacts”. Yes, you might get work from being listed somewhere, and it always looks good, but it’s usually just a clever step to help them make a profit for the studio by doing demos or demo updates for newbies, or make a coach seem more able to help you, e.g. “train with me and you’ll get listed here”.
Often they start by reaching out to you about being “listed” or “added to the roster” and when you engage with them, they talk to you about updating your demo or your training. So it seems free at first…just update your demo. With them. Or read this article…which tells you to take their class. Or they may not have a specific website they will list you on, but they will “promote” you to their contacts and clients.
It’s not directly connected that you have to pay to be listed…but everyone listed has paid. And generally no one is getting paying work via that listing. Sometimes they legitimize and promote themselves by reaching out to working talent who have a strong following on Social Media. It IS a free and risk-free deal for that big name to be listed. Or they harvest emails and send out a few bulk emails every you promoting the talent on their listing.
Remember, in a room of people only there because of money you paid, all of whom have years of experience while you have none, the odds that you look like a sucker to them are very, very high.
Another example of this is they put you in front of industry pros who can cast you. This is certainly a gray area. Some of these pros will work with that 1-in-1,000 talent that comes in front of them—if they could help you at all. But they are NOT there looking for talent. They are there because they are simply a different version of a paid coach. It’s simply another way for their industry connection to earn them money from a training program for new folks. The better it looks, the more it costs.
They may be a decent studio, or a decent coach, but do NOT pay them for their services because of their promise to make you money, to get you “seen”, or “listed”. The most famous example of this are the John Casablancas Centers. (Ask any legitimate agency what they think of Casablancas).
What do you need to get started?
There are tons of ways to find voice over work. But first you need:
▪ Samples of your work (demo)
▪ A way to share your work with prospective clients (website)
▪ A way to record and produce work for clients (home studio)
▪ Membership in a GOOD online marketplace
▪ An understanding of fair rates
▪ Learn about marketplace ranking algorithms so you can move up in internal search results
I’ll cover these briefly in order:
DEMO: Read the rules for getting a demo here, and learn how to make your own demo here.
WEBSITE: Here’s a sample of a WIX.COM voiceover website you can create by yourself in just a few minutes. This video covers the first steps to creating a Wix.com website. If you want to try WordPress instead, click the links in the left column at this website to go step-by-step.
HOME STUDIO: Click here, or scroll to the bottom of this post for more info.
ANIME/ANIMATION-SPECIFIC: Check out the these sites for opportunities.
WHERE TO START: There are lots of sites purporting to help talent find work, and helpful forums such as VO-bb.com and other sites worth knowing such as VOAgentalliance.com, but in the list of dozens of sites below, I concentrate on places well-known to help you get work or connect to those that can help you. Note that site owners and reputation change all the time! Also realize that Pay-to-play (P2P) sites have their own strategies, see P2P tips and more P2P tips. Generally, only audition/submit early, when the number of requested auditions are under the limit. Here are two lists of sites if you want to do more research: one, two.
FAIR RATES: Examples • How to negotiate. How much do online jobs pay? Pretty decently at the better sites. Here are some examples with dates from screenshots of gigs after the 2018 relaunch VOPlanet, where nearly 1/4 of the gigs shown are in the $1,000-$6,000 range, and almost all available to non-union men or women. The image below is an edited summary. Actual listings on VOPlanet include much, much more detail on each gig. Posted with permission of VOPlanet owner Kevin West.
To find in-person work near you, search for advertising and recording studios near you. Here are 558 example results from the Twin Cities one • two • three • four. (You can possibly also search for “talent roster.”) Call them and say “I do voiceover and live in the [your city name here]. Do you have use for a voice like mine?” VoiceActing101 also shares many, many ways to seek out work in a post you can read here.
- RANKING ALGORITHMS: When you join a site, it knows nothing about you. So each of the first things you do weigh very heavily on the internal ranking of “is this person worth having here?”
- Never join a site unless you’re ready to work. If you join and do nothing, all they know about you is that you do nothing.
- Within reason do ANYTHING your first client wants you to do, for example, give them free proofreading. Because your first client is 100% of your “how does this person deal with clients” ranking in the site’s algorithm.
- Third, if you are already on a new site and feel you got off to a bad start, consider restarting with a different email and slightly different profile instead of quitting altogether.
But: Every site is different. Some don’t have a formal internal ranking system. Just realize for now that all of the first things that you do are 100% what create your reputation, and your reputation is what affects your results.
These 55 marketplaces were last updated Sept 10, 2022.
🛴 = Best for beginners
📜 = includes union
💲 = P2P (“Pay to play”=pay to audition)
🚩 = Difficult to get into / pre-screens / special requirements
🎬 = High number of auditions for first gig (200-600)
🦋 = Primarily animation / audio drama. Warning: Low rates are common
😡 = Unethical/unprofessional, high markups/low rates, recruiting for sales jobs, etc.
⛔ = Unpaid or unpaid volunteer (you work for free)
Also see “Best Marketplaces” below 🔻
💲📜 ★ Improved in 2020 ★ 2021 Winner “Best Voiceover Job Site of the Year” 8th One Voice Awards 2021 ★ Cost in Euros: 39.90/monthly • 199.90/6 mo. • 349.90/year ★ Invitations to audition • like VOPlanet, they:
“Consider professionally trained talents only (no, a weekend course does not qualify as professional training). Profiles that do not fully support a professional background, will be deleted without notification.”
💲🚩🚩📜 🎬 ★ FAQ1 ★ FAQ2 ★ FAQ3 ★ Signup ★ Facebook ★ WoVo Partner ★ 2018 relaunch
“We double-check credentials, demo quality etc. If a talent is not quite ready, we give them guidance and a refund.” Also owns VoiceCasting.com “a virtual casting assistant for dozens of ad agencies.“★ FAQ-Signup
Cost was $199. As a job posting site it is not as plentiful, maybe you’ll get 4 auditions a week. But this website makes clients pay industry rates and the best bit, no one can underbid their rate and there is no cut taken from the job. It is truly a site for professionals.
- Being professional is the name of the game here folks. Since these are just open auditions, you’ll need to bring your A-Game to each audition (as you always should but we all know that some other websites are more LAX with their needs as they charge more LAX Prices).
- Make sure you write a note for each audition. This becomes tedious… trust me I know. But I do a short Slate and write a note to the client. This personalizes your audition and is something that can separate you from the pack of other auditioners. I’ve always said it, I would rather work with someone who is 90% of the way there and kind/professional vs. someone who is 100% of what I need but is terrible.
- Audition early. You don’t know how many people are on the site, but casting directors get tired of listening to dozens of auditions and it is probable that they won’t listen to them all. If you are the 50th auditionee you have a smaller chance of being heard than if you are the 1st – 10th, so turn on your notifications and audition when you get the chance.
VoiceOver.Biz / WoVo® 🖇
💲🚩📜 ★ Requires WoVo membership★ Member signup ★ “WoVO® has NO production company subsidiary“
Fiverr ★ Tips
Low per gig but often high effective hourly, even higher than union for some. Also many achieve $300+/gig averages once qualified • Excellent for getting initial clients to brand oneself as a ‘working talent’ Many voice talent here have achieved total earnings of over $250,000 in their first years.
Job Aggregator sites
Google Jobs. Example search result (many Toogit listings)
SimplyHired. Example search results “voice over” • “voiceover” • “voice actor” • voice talent
Example Behance search result showed just 6 U.S. Freelance Jobs for “voice over” in 20 days, and zero for “voice talent” or “voice artist” in late 2022. But results are fairly filtered to actual voice over postings.
Example gig search result ★ General freelance site similar to Upwork • takes between 3.5-20% of all revenue, depending on lifetime billings with a client.
Upwork clone that started in India and took off. Google aggregates some of their voiceover gigs here.
Upwork clone 5% fee starting Summer 2023
😡 Freelancer/ Guru/
Indeed Job Boards
VO mixed in with non-VO results (sales jobs, modeling) but some actual VO work.
Other Freelance Sites
There is voice over work on other freelance sites (Toptal.com, TaskRabbit.com, etc.), just less of it—though this can change over time. Twine.net has talent give their day rate for work.
Some production freelance sites (Assemble.tv, Stage32.com, ProductionHub.com, etc) have projects that need voiceover eventually, but they or their clients commonly work through talent agencies or go out to other freelance or audition sites to recruit. It does happen—Stage32 showed one voice over job in the last half year—it’s just rare. What these site do offer voice talent is the opportunity to identify established production companies to network with (LinkedIn is a good place to build up a network of connections).
Historical Freelance Site Popularity Rankings (click to view)
Many sites have little to no voice over work or are primarily job sites not gig sites, though some change over time. Popularity is based on old (2021) Alexa rank divided by 100:
10 Dribbble Jobs
20 Angel List Jobs
100 We Work Remotely
700 Working Not Working
700 Scalable Path
2000 No Fluff Jobs
10000 Remote One
80000 Team Extension
On May 1, 2022, Amazon shut down Alexa Internet which subsequently discontinued Alexa Rank with it. Modern alternatives to Alexa include Semrush, Similarweb, Ahrefs, and Moz Pro.
ANIME/ANIMATION Primarily 🖇
💲🎬🦋 Casting Call Club ★ Q&A ★ Free option ★ Signup ★ FAQ ★ Interview with founder ★ Open Gigs (scroll down) Though there are many paid projects, it’s not intended for side gig income, but more to help you build a portfolio of work. Use it to experiment and get known—but most listings are low-effort fan works. But over time, having a good reputation will earn you more access to better-paying gigs. Many positive changes in recent years—not a stagnant or overly difficult marketplace with a nice community.
🛴🎬🎬🦋 Behind the Voice Actors (BTVA) Signup ★ Casting Call
🎬🦋 Voice Acting Club ★ Unpaid GAME ★ Paid GAME ★ Creator of the Indie Rate Guide
🎬🦋 Voice Acting Space ★ Current Auditions ★ FAQ ★ Signup
🎬🦋 Voice Chasers ★ Job Postings
🦋 Gamedevmarket Voices ★ A place to sell your “package” of pre-recorded voices • low-paying, with no way to increase rates (unlike Fiverr) link
Less-Successful, Best to Worst:
Backstage Magazine 🖇
💲📜 ★ Improved in 2020 ★ Cost ★ View Current
Bunny Studio (Formerly Voice Bunny) 🖇
😡🚩🚩 ★ over 70% gig fee ★ “Speedies” earn some talent $20-$60/hr, one they get a system down, and are the work category on BStudio with good reports from new talent to the site. Some paid “contest” auditions also available.★ Difficult technical “clean audio” requirements that seem to change without rhyme or reason (previously accepted audio rejected, then later accepted again). Seems “audio tech” requirements may in some cases partly be excuses for just accepting or removing talent for other reasons.
Bunny Studio Tips by Jay
They want high quality work, cheap rates (kind of, you CAN set whatever rate you want) and fast work. They are forcing that magical triangle that we’ve been told you can’t have all of (cheap, fast and good). Here’s how you play by the rules to get the most of their system.
- Keep your project tab open with notifications on while you’re working at the computer and if you’re available, when you hear a ding try and get the speedy… if you don’t ah well get back to working on whatever else you were doing, if you do land the gig make some cash and move on.
- If you have a client that contacts you at a strange hour, you miss a gig deadline, you respond late to a gig or anything that would affect your ratings score simply shoot them an email at their support email. 9 times out of 10 they will wipe the mistake from your score and your stats won’t be affected.
- You don’t make a lot of money from “speedies” (this is their most popular 30 min turnaround service), it ranges from $10 – $20 per speedy. I treat them much like fast food, it is cheap and fast. These reads are typically less than 27 seconds and take about 10 – 12 minuets to do from start to finish. From speedies alone I average $800 – $1000 per month. NO, IT’S NOT ALOT PER GIG, but they add up quickly.
- Update your samples… often. I suggest making 2 – 3 samples a day to upload. I would FLOOD this website as it gets you higher rankings and exposure to more clients. They have no limit to samples so put as many as you possibly can.
😡💲🎬📜 ★ FAQ ★ Signup ★ Relaunched late 2019. Large marketplace with many complaints, most successful talent testimonials online pay for the $888 or $2,200 membership plan. Assume thousands of auditions/year to be successful.
More tips to optimize profit on Voice123—Audition if:
- Many good reviews of buyer—they’ve hired many actors.
- Lots of auditions are flowing in right away, audition fast!
- Big company (Search company names + “revenue” if unsure)
- Script is well written/flows easily.
Avoid auditions if:
- Too long, stay under 1000 words
- Low-paying. Archive. Maybe $250 for 200 words min. Set it so you don’t even see low-paying ones.
- Topic you don’t like, e.g. politics.
- Several character voices are required (may be poorly funded or managed).
😡😡💲💲🎬📜 ★ 20% gig fee + hidden fees ★ FAQ1 ★ FAQ2 ★ Up to 93% “hidden” fee (i.e. skimming/stealing) ★ typically 250-600 auditions to win first gig.
What’s wrong with Voices:
💲 ★ FREE signup and auditions ★ FAQ ★ Began as audiobook only, relaunched for all types of Voiceover. As of Sept, 2021, they post 1-3 auditions weekly, often with a very short audition window, such as 24 hours.
Findaway Voices Audiobooks/WIDE 🖇
🚩🚩 ★ To get work as a narrator, Findaway picks (usually) five voice talent for the author to choose from—hence they “recommend” you for some projects, and then you may audition. You set the per-finished-hour rate you’ll work for. Royalty share (commission on sales) is only an option through that they call “Voices Share”.
LinkedIn, Facebook, Twitter, YouTube, Reddit.com r/RecordThis • r/VoiceActing
🛴★ Tips ★ Search Twitter for #voiceoverjob Have a business profile where possible! People search for voice over—be in the search results! Also check out jobs offered LinkedIn Job alerts: Sample How To
Poor reviews so far:
GMVoices ★ VoiceArchive ★ VoiceTalentOnline ★ VoiceGiant ★ Voiver ★ DirectVoice ★ Filmless VO jobs (no record of anyone ever receiving a response to job inquiry) ★ VoiceBros (35% gig fee) ★
😡💲🚩VoiceHunter.com, PodcastAccess.com ★ Showcase scam ★ $500 for 2 years to be “featured” at VoiceHunter. Marketplaces created by the radio show and talent agency manager Adam Goodman. Agent required to be listed, though if they approve of your submission and you are NOT repped, they will refer you to CentralVoiceGroup (though they lost control of the domain in 2022, and still haven’t fixed the link on their site) to be repped by them. Studio access and full-length demos required of all submissions. We haven’t yet found talent who have gotten work here, though more than one has received legitimate auditions. They do market themselves to talent, e.g. “we have selected you to pay us money for a listing” kind of emails have been received by some talent, which is considered by some a not a good sign.
😡🚩 VoiceOver Profiles ★ FAQ ★ Showcase for talent trained by coach Guy Michaels, not actually a marketplace open to talent.
😡😡 Voice Cast Networks ★ FAQ ★ Showcase site only
😡 AcademyVoices ★ Showcase for students of coach Anthony Pica (founded 12/2022)
😡😡 Actors Access or Casting Networks ★ Very few VO gigs listed each year, not worth the effort, though registration is free
😡😡 Spotlight ★ EU-centric, not voiceover focused, and requires at least four professional credits in featured, speaking roles in full-length film, qualifying short film, television, theatre productions or character-driven voice work – OR – minimum of a year’s training from a full-time accredited drama school or university course.
All of Craigslist Searches
🛴 Sample listing ★ Try different search terms: Tips
🚩💲📜 🎬★ Shut down in 2023. “A positive attempt at creating a new marketplace that didn’t quite work.” In late 2020 Matt Dubois sold the failing site to Tiny Internet. Original vision: • Interview 1 • Interview 2 ★ Notes on what went wrong • How memberships and categories work •
Auditions Through Your Agent 🖇
Sites “replacing” the former VoiceBank.net:
🚩🚩🚩📜 Your agency has to list you here (no talent signups). Probably the most successful site attempting to replace VoiceBank.net to provide auditions to Talent Agencies. Begun in late 2018.
Voice Casting Hub 🖇
🚩🚩🚩📜 Formerly affiliated with voiceovers.com. A service connecting agents, talent agencies and their talent to auditions. You can list here free if you don’t have an agent, but you can’t audition unless you have an agent. HUB FAQ – Signup
VOQuent Tips (click to view)
They function more like an agency. A client comes and tells them (Voquent) what they need, and they connect the client with a voice actor in their roster. So how do you get contacted? Samples.
- They are very upfront with what they want as far as samples and how many you need. Put in AS MANY AS YOU CAN. At the top of your profile page as you add more samples it’ll tell you how great your visibility on their platform is becoming, the more you add the more you’ll be seen.
- Fill out your profile, professionally. They want (as every website does) high quality sound and they charge based on that premise. You can even include images of your studio, what gear you use, what DAW you use, your computer, etc. Give them this info. If a client is going to pay $500 for a 30 second ad spot (which yes, is priced accurately depending on broadcast needs and length of use), you better believe they client will want to have some visual assurance.
- Variety is key. Since they limit the number of samples you can provide and you can’t actively look for jobs, you’ll need to provide vocal variety and tag your samples to appeal to different needs. This will open you up to a wider client base and get you in front of more people.
Primarily UK-accented English and Multi-lingual
VoiceFairy.com (since 2017) • Voiceovers.co.uk • GreatBritishvoices.co.uk • LondonVoiceover.com • Voiceovers-uk.com. (There are more multi-lingual gigs every year.) • VoicesCloud.com since 2021 (tips) 20% fee Facebook
😡 Voice Jungle ★ Low-paying, with no way to increase rates (unlike Fiverr), started by ProComm in 2012 ★ Lets you take weekends ovv
😡😡 VoiceJockeys ★ FAQ ★ 50% gig fee, low-paying, no negotiation, they encourage clients to offer low rates
😡😡 The Voice Crew ★ Site ★ 45-50% gig fee
😡😡😡🚩🚩💲💲📜 The Voice Realm ★ Unprofessional, antagonistic: One ★ Two ★ Three ★ Four ★ long wait★ low rates★ Example from Oct’2020, according to a private forum post “We have reported the Voice Realm to the Union for libeling well known voices and agencies.”
😡😡😡😡 Cosmic Global Limited ★ Known for NOT paying. Primarily translation services, voice over is a sideline
😡😡😡😡 VoxTab ★ Known for NOT paying. Primarily translation services, voice over is a sideline
😡😡😡😡 Extra Terrible / Studio Topaz / TigerMesa They primarily seem to charge talent for training, and use the promise of work to convince talent to pay for their training. Their latest rebrand was in Oct 2022.
😡😡😡😡😡 CoVoCo ★ Basically a scam
😡😡😡😡😡💲 Idiom Talent / VOCADD ★ Basically a showcase scam variant. They contact talent to ask for money. MANY forums warn against them. The scam works like this: You get an email offering to represent you “Idiom would like to be your agent”. If you accept, you must pay. Formerly, you were required to send them $145 for a year’s membership in VOCADD, and Idiom took 20% of any work you get through them. Legitimate agencies take 10%-15% for Union (US vs Canada) or 15%-20% for non-union.
💲 Not recommended. A place to post demos free or for a monthly fee (two tiers offered). Primarily international, created in 2017.
🚩🚩📜 click for info • Long-time reputable agency/marketplace that grew after VoiceBank was lost.
Unpaid Volunteer Only:
⛔ Librivox ★ Record portions of Audiobooks ★ Introduction for voice talent ★ General FAQ ★ They offer public exposure by listing volunteers in their search engine, as well as the opportunity to promote themselves and their websites at the beginning or end of each recording. Volunteer opportunity types: Reader (voice talent) • Editor • Proof-Listener • Book Coordinator • Meta Coordinator • Listener • Moderator
⛔ Learning Alley ★ FAQ ★ Record at their locations. Helping schools support students who struggle to read well. Formerly Reading for the Blind and Dyslexic, founded 1948. More than 6,000 volunteers across the U.S.
⛔ Gatewave ★ FAQ ★ Record from home ★ Read news, websites, etc. for listeners who are blind, visually impaired or reading disabled
⛔ Canadian National Institute for the Blind (CNIB): www.cnib.ca
⛔ Audio Internet Reading Service of Los Angeles: www.airsla.org Geared to the needs of the print-impaired community, including sections from daily newspapers and magazines, store ads, voter information, vision research news, theater reviews, consumer product information, and more.
⛔ Other possibilities: Start your own online radio drama or join up with one ★ Volunteer to read at local libraries and hospitals ★ Volunteer work list
What About Site X?
Have information you’d like to share? Thanks in advance…let me know! Click the “contact us” link at the top of this page, and I’ll research it and update the list with what I find. Thanks!
Online marketplaces tend to get worse over time. Why? Three groups who want different things have to be kept happy:
- Site Owners
Keeping all of these groups happy is hard. For example, letting more talent into the marketplace can lower overall quality, making clients unhappy, but making more money for site owners (particularly if the site is P2P). Conversely, only letting top talent into the marketplace makes clients happy, but can make it hard for site owners to have enough profit to do the work needed.
So sites often go downhill and then get bought out, reboot or figure out better ways to fool talent. We use a variety of sources, often comments from working voice talent in forums, YouTube reviews of sites by working talent, a wide variety of searches on social media, as well as reviews by by bloggers, etc.