About a month and a half ago I signed up under someone on cs.rin.ru referrals for Gagabux. At the time I was new to the whole payed to click thing, and I saw how they has a lot of ads. For about a week I clicked all the ads and rented 2 refs. After those refs earned a little. I made a big jump and deposited $10 from paypal and rented 12 more refs. I clicked my life away for a month. I did the whole recycle recycle recycle thing for 30 days as no refs stayed active for more than a week. At the end of the month I was left with $7.30. In order to make my money back, including my clicks it needed to be $14. After I saw that, I decided to give up and request payment for my $7.30.
I'm warning you, stay away from ptc's or it will suck your time and money away. I think Gagabux is more of a gamble then a money earning. Nobody on Gagabux on this former to my knowledge earned much. Many people at cs.rin.ru used the change referral picture to higher earner's picture trick. (I'm looking at you Hegyak and 123max.)
I've moved on from that to a little blimpycash and trying to get people to fill out a sharecash survey with the people at paidtoreg (more info about those sites on my earn cash site).
FYI Stay Away from PTC's
Save Yourself.