Hmmm... reading through the past two pages, I think I finally understand why I sometimes get the captcha even though my deposits are something like 10 times my earnings.

When the captcha shows up, the winning amount is also around 10 btc. But when the captcha doesn't show up, it is around 21 btc. Ahhh... so one or more of the many ip addresses that my router gives me each day are blacklisted. Yes? The question is.... why? The only thing I ever do on freebitco.in is do my hourly claim and deposit money every few weeks. That's it. So why would some of the ip addresses be blacklisted?