Bug Hunts can be fun. But in a crowd-sourced testing environment they are very competitive, and not too lucrative, unless maybe you have a LOT of experience. Often, only the first person to find a bug gets paid for it, so you need to spend time reading all the other bug reports to make sure you're not filing a duplicate. If a website is huge and well done, you could spend a couple hours before you find something reportable, and then be paid only a few dollars for it, unless you happen to find a really critical one.

Today, I am irked that another tester basically copied my bug report, repeated it in a different environment, and reported it as a new bug. He did a really sloppy job (probably because he was trying to alter it so it didn't appear to be a copy, but he left in crucial details that make it obvious that he copied me), didn't follow instructions about titling the report, and didn't even acknowledge that he had been able to reproduce my bug. Unbelievable. I hope this is not the norm. Note: if you confirm other's bugs, you don't get paid, but you get positive points for it.