rants from the dark side of marketing

Captcha Farms

The one greatest vulnerability of captchas is the mechanical turk. If a human can solve it, which is not always the case these days, then you can find people that will solve a thousand captchas for a dollar.

Captcha farm services

The following is a list of commercial captcha farms. A few of those seem to be coupled with specific products, which probably means you can’t use them with your own code. Prices are per thousand captchas solved.

Decaptcher seems to be the best choice for now, with low prices and an assortment of APIs you can use. SocialMarketServices rivals Decaptcher’s prices, especially with their volume discounts, however I haven’t heard from anyone using them.

Advantages of commercial captcha farms

  • 24/7 availability of captcha entry workers
  • Quick deployment with off the shelf APIs
  • Seamless scaling up to moderate volume

Disadvantages

  • Higher cost than hiring your own workers
  • Too slow when there is excess service load
  • They can only handle so much volume

Running your own captcha farm

Having your own private captcha farm might be cheaper but it is a more involved affair. First of all, you need a backend and an interface for your workers. SocialMarketServices and SolveMyCaptcha offer solutions that let you hire your own captcha solvers. You could also surely find an assortment of ready-made captcha farm solutions by posting on one of the freelancer websites.

One important design decision is whether your workers initiate the captcha fetching scripts or poll a queue asynchronously. The first one means your scripts might be running too fast, which leads to either getting banned immediately or having big groups of accounts banned at the same time in the future. Fetching from a queue could frustrate your workers, unless you can provide consistent volume. If you pay your workers per captcha, they won’t be happy when you are not giving them more captchas than they can handle. Keeping your queue full and not overloading it, is a fine balance you have to keep, unless of course you like submitting timed out captchas.

Finding workers to solve captchas should be fairly easy. Here is an example project on a freelance site, there are 113 bids. There is a more than adequate supply of people that will solve captchas for $0.001 each.

You should assign your workers shifts that cover the whole 24 hours, that way you can spread your captcha fetching throughout the day. You might be inclined to divide the day in three eight-hour shifts. Typing captchas for eight hours straight is not an easy feat. I think workers would be more comfortable and efficient with two or four-hour shifts.

Advantages of running your own captcha farm

  • Cheaper cost per captcha solved
  • Designed for your use case, could add tasks other than captcha solving
  • Can scale beyond what the commercial services can handle

Disadvantages

  • Time wasted managing servers, software and workers
  • Hard to keep workers occupied if you are doing low volume
  • Takes time to deploy, with a service you can get started in a couple of hours

A better captcha farm design

If you are serious about setting up your own captcha farm, here are some ideas to consider. Please leave a comment if there’s something you would like to add.

Backend

  • Ability to include simple tasks besides solving captchas
  • Asynchronous queue for tasks
  • When queue is empty, either try to increase the rate of captcha fetching or queue different tasks
  • Monitor queue load, send warnings when things aren’t going smoothly
  • Offload captchas to a commercial service when things are running hot

User management

  • Configurable fixed-time as well as free-running shifts
  • Collect statistics on workers, such as: completed tasks, failed tasks, timeouts, task completion speed
  • Allow master accounts for managers of worker teams, slave accounts don’t receive payments and can’t choose their shifts

Worker interface

  • “Take a break” button
  • Tasks pulled from queue via AJAX
  • Optional timeout counter attached to tasks, input disabled when time runs out
  • Optional input restraints/validation, such as allowed characters
  • Move to next captcha input field on
  • Allow input field navigation with arrow keys
  • Configurable number of tasks displayed simultaneously, vertical list of tasks is better
  • Fetch new tasks before the previous ones are finished
  • Support translations of the interface

A useful trick

I borrowed this trick from BlackhatWorld. The idea is that you can glue two captchas side by side and have workers treat it as a single captcha with two words, not unlike reCaptcha. Quite the brilliant idea, since I suspect this will not only lower your cost per captcha, but could also increase overall throughput. This is somewhat complicated to implement but I believe it would be time well spent.

Misc links

Here are some possibly defunct services as well as some worker’s login pages. On a sidenote, PixProfit is allegedly the other side of Decaptcher.

http://pixprofit.com/

http://captchasolver.biz/

http://www.captchakiller.com/

http://mrcaptcha.com/

http://captchasolve.com/purchase.php

http://captchahawk.com/

http://picworker.com

http://www.trueonlineworker.com/

http://www.truehardworker.com/

http://www.2dotnetguys.com/CaptchaWeb/CaptchaWebDecodingPage.aspx

http://www.captcha247.com/

http://www.captchawork.cn/

http://www.captchawork.cn/captchatype/

http://solvemycaptcha.com/WorkerLogin.aspx

Posted on Sunday, August 2nd, 2009 at 10:46 am under Rants. You can skip to the end and leave a response. Pinging is currently not allowed.

56 Comments

Edwin Says:

Hi Buddy,
I’m running a BPO with 10 seater. Can you please tell me how to create a new a/c in http://picworker.com for my team to use???? plz help at the earliest by replying to my mail ID trendsetterzbpo@gmail.com

countzero Says:

If you can find an ad or freelance project posting by the picworker.com people, then just reply to them.

blackhat boot camp Says:

That’s an interesting line up. I didn’t know
there were so many services available.

thanks,
Bompa

Arvind Patel Says:

Hi i am arvind patel and i like to have this catcha Business so plz provide me Plz send me e-mail for doing this business…Thank u

jksoftwaresolutions Says:

Hi i am interest to captcha entry project please sent me the link i want to start my work

thanks
jksoftwaresolutions
+919036967982
+919916373991

Ebenezar Says:

I need without investment Captcha Data Entry online Work. Please reply me my mail – ebi_holly@yahoo.co.in

vipul chauhan Says:

I am interested captcha work. so plz provide detail via mail.

arif Says:

give me captcha job please.I have a good team
my messenger id:evaovi4@yahoo.com

Carter Cole Says:

do you know if anybody has recaptcha broken? not humans but some neural net or similar programmatic method. id also like to know if anyone has seen a change in recaptcha since google took it over

also my post on breaking text captchas… when will they get it?

http://j.mp/4dy0HA

kilang Says:

Please also do let me know the details of captcha entry job..I f you can please send me k to jamirkilang@yahoo.cohttp://www.blackhat-seo.com/wp-content/plugins/si-captcha-for-wordpress/captcha-secureimage/securimage_show.php?sid=d2fdec1364f2a03d2f21bdbb12a77327m

abdul Says:

Hi this is abdul i want to create account in picworker.com but this site is not open please help me

dhiraj Says:

HI THERE,
i would be really grateful to you if u can suggest me some good captcha server where i can work and earn good income, i also want to know what is the procedure to register at http://www.2dotnetguys.com. plz help me out.

thanks and regards
dhiraj

Jan Says:

I want to do Captcha business Please Provide Me…..Please

Jahangir Says:

Please visit: capthadatasolutions.blogspot.com

Jaysen Says:

Please provide me a captcha project I am currently a captcha worker but finds a site who provide a higher rate. here’s my e-mail: jgeronimo4@yahoo.com.ph please contact me directly

bryan Says:

none of those sites let you register as a typer. how do you do this? i guess you can go to rentacoder and other bidding sites and bid the lowest?

prasad Says:

HELLO CAN ANYONE TELL ME HOW TO REGISTER ADMIN PANEL DIRECTLY FROM THIS SITES

typethat.biz

clientocr.com

http://www.2dotnetguys.com/CaptchaWeb/CaptchaWebDecodingPage.aspx

http://solvemycaptcha.com/WorkerLogin.aspx

please friends help me i need to start the work plz give me the directions for direct sign up for above captcha sites

prasad Says:

HELLO and also can anyone tell me where to sign up diretly the captchas sites paying for solving captchas for 1000 entries 5 $

plz tell me
send to me

bewithme465@gmail.com

Janak Raj Rathod Says:

Hello,
I read your post and found it very important. Can you please provide me the information of how to create an account in 2dotnetguys.com Also let me know of captcha project that will pay more than 1$ each 1000 correct captcha. Thank You

Ram Says:

Hi i am Ram Raj Yadav and i like to have this catcha Business so plz provide me Plz send me e-mail for doing this business…Thank u

apsara patel Says:

Hello can anyone tell me how to register admin panel directly from this sites

http://www.2dotnetguys.com/CaptchaWeb/CaptchaWebDecodingPage.aspx

please friends help me i need to start the work plz give me the directions for direct sign up for above captcha sites

sanjib Says:

sir,

i have a good exprience. i have good team.
i want a data entry job. so, sir contact me.

my id : sanjibkumar_rana@yahoo.com

thanks
sanjib

RAJENDRA GANJI Says:

HI,
I am interested in solvemycaptcha.com
and all above sites.

Plz tell me how to register with solvemycaptcha and capthasolver and dotnetguys

mail me at rajendra.ganji@gmail.com

Thank you….

VIJAYAKUMAR Says:

HELLO and also can anyone tell me where to sign up diretly the captchas sites paying for solving captchas for 1000 entries 5 $

plz tell me

rrvijaykumar002@gmail.com

pushparaj Says:

how do i start captcha form like pixprofit.. how can i get profit from there pls tell me i know about captcha works i have exp also

Jahangir Says:

Hi
Have you any captcha work. I have data entry firm. I find work.

Jahangir
+88-01916266586

sunny Says:

Hi aim interested to do captcha work please provide the work.

please inform me if any work is available aim expecting $3 per 1000 entries.

my mail id: sunnyshaik17@yahoo.com

Jahangir Says:

Dear Sir, I find online captcha data entry work for my firm. Jahangir, Messenger ID: data_entryfirm@yahoo.com

sundar k Says:

ai sir i am work in captcha poject you request fom captcha project and demo project

dharmesh oza Says:

HY,
I AM INTERESTED FOR THE CAPTCHA WORK.I CHECK THE LIST WHICH IS AVAILABLE ON THIS PAGE. ABOUT PIXPROFIT I KNOW. AND FOR http://www.2dotnetguys.com/CaptchaWeb/CaptchaWebDecodingPage.aspx I DON’T KNOW HOW TO JOIN THIS SITE. PLEASE SEND ME THE MORE DETAILS OF THE JOINING PROSIGRS FOR THIS SITE.
EXCEPT THIS 2 TO 3 SITE OTHER SITE CAN’T OPEN.
THANKING YOU.
DHARMESH OZA

sundar k Says:

Have you any captcha work. I have data entry firm. I find work.
Jahangir

Rinki Says:

give me captcha job please.I have a good team
my messenger id:evaovi4@yahoo.com

bala Says:

HAI
I AM WORKING FROM INDIA HOME PROJECT PLS MY E MAIL ID bala_2786@yahoo.com pls captcha project pls sent

Karthik Says:

Hi,

I am freelancer provider. I worked for Arvind Patel from Apr 19 2010 to Apr 23 2010. He told he will pay weekly payment. He need to pay $22.61. But after completion of the work he told he can’t pay.

So please no one provide work to him also no one work with his work.

PRABAKARAN.V Says:

I AM INTERESTED FOR DECAPTCHA WORK.I DON’T KNOW HOW TO JOIN THIS SITE. PLEASE SEND ME THE MORE DETAILS OF THE JOINING PROSIGRS FOR THIS SITE.EXCEPT THIS 2 TO 3 SITE OTHER SITE CAN’T OPEN.
THANKING YOU.
Prabakaran
my mail id:hardware1981@gmail.com

Dhanvant Says:

i am really interested in captcha projects,please give me all details about that on dhanmits@gmail.com

dorothy Says:

hi pls tell me how to register in dotnetguys.com
because i want to earn good income.pls….
thank you
contact me my yahoo.id
dorothymallari@yahoo.com
09183480653

Jahangir Says:

Dear Sir/Madam,
My team worker have been ready to do the online captcha work. Have’s it Pls contact me as soon as possible. Cell: +88-01190801216

arif Says:

I want to open a captcha server .now what i do and where i learn how i creat a server for captcha job?

newjack Says:

I am interested in captcha work,give me the details

Omer Says:

Hi, please can anyone can assit me how can i make account on
http://typethat.biz/
http://www.2dotnetguys.com/CaptchaWeb/
Please provide me information.
my IM is = sh.omer live.com

benny Says:

hai there
i am going to start a captcha farm on my own,can any one say where can i get the software to generate captcha image,black hat seo can u help me please
thanks

Ramesh Says:

Hi
HELLO CAN ANYONE TELL ME HOW TO REGISTER ADMIN PANEL DIRECTLY FROM THIS SITES

typethat.biz

clientocr.com

http://www.2dotnetguys.com/CaptchaWeb/CaptchaWebDecodingPage.aspx

http://solvemycaptcha.com/WorkerLogin.aspx

please friends help me i need to start the work plz give me the directions for direct sign up for above captcha sites.

JOEF MARSH Says:

Hello,
I m interested in captcha work. i want work without investment. so plz guide me

regards,
joef

sonamoni Says:

HELLO and also can anyone tell me where to sign up diretly the captchas sites paying for solving captchas for 1000 entries 5 $

plz tell me

ripon Says:

HI,
I am interested in solvemycaptcha.com
and all above sites.

Plz tell me how to register with solvemycaptcha and capthasolver and dotnetguys.give me the details

sonamoni Says:

Hi aim interested to do captcha work please provide the work.

please inform me if any work is available aim expecting $3 per 1000 entries.

mimi Says:

Hi i am intersted to work captcha image typing. I can work anytime day and night pls.i only work for an honest person and not a scam and really pays me after i am done wiht the work and will not vanish. Could someone hire me to work image typing. Thank you

mimi Says:

I am looking for captcha work pls consider me and this is my email dreamkeeper@onlinefamilyreunion.com

akil Says:

Hi, We have huge captcha team, we want to know more new captcha server. We have also few captcha servers, who need just come to yahoo messenger: akil_captcha11@yahoo.com.

Thanks

ministrong0932 Says:

software of pixprofit for sell YM:ministrong0932

eihcer13 Says:

hello im interested in captcha typing jobs… can anyone pls send me details…:) or legit sites that pays well..thanks

ministrong0932 Says:

also software for KB LA TT
YM:ministrong0932

tukangketik Says:

HI

I NEED WORKER ON CAPTCHA PROJECT, PAY 0.6 / 1 K CAN DO IT ALL DAY. PROVIDE YOU WITH SOFTWARE TO WORK FAST. CONTACT ON YAHOO MESSENGER AND MAIL :kevin_sutji@yahoo.com

asim Says:

plz provid eme best captcha work with software and high payout

i am living in pakistan

+923454303658

Bijoy-Bangla Services Firm Says:

i sell captcah entry admin panel and sofware.contact by yahoo and google talk
yahoo msg: bijoybangla62
google talk: bijoybangla62

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Asides

Content may be king, but distribution pays the king’s mortgage.

8/12/09» 15:51» link» comments

Google acquired reCaptcha about a month ago, you might want to throttle your reCaptcha solving per IP address from now on.

14/10/09» 16:22» link» comments

Matt Cutts on how Google deals with spam.

7/10/09» 14:31» link» comments

Why you don’t want to shard.

Real World Web: Performance & Scalability.

NGINX + PHP-FPM + APC.

Gearman is interesting.

31/08/09» 4:46» link» comments
 
 
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