ClixSense is a great site that I have been pleased with so far. I haven't earned enough to receive payment yet but it has a good reputation and I have talked to lots of people that have been paid. With this site you just visit it as often as you like and click on the advertisements listed. Stay on that page for 30 seconds and your account is credited. Very easy and not that time consuming.
Just click the Clixsense referreral above and sign up today.