I was using SenukeX with Decaptcher.com and it was doing well, but I was running low on credits (<$1) and I turned on DeathbyCaptcha to take over its job for captcha solving. Strangely, when SenukeX's was doing the social network registrations, the success rate was terrible. I ran it 2 more times but the success rates were the same - no increase. I switched back to Decaptcher temporarily to use up that $1 credit and strangely, success rates were picking up back to normal. Then I remembered DeathbyCaptchas were using OCRs to solve their captcha in the front line before sending those unreadables to human solvers. Still, I'm still confused with the huge success rate difference. Your opinion? P.S: Both servers were working fine and NOT overloaded or whatsoever.