I play around on Crowdtap sometimes. Not often, just usually in the evening hours when I need to pass some time. On Crowdtap, you answer surveys, or share Crowdtap, or review companies for points. Eventually these points add up to gift cards to Amazon (or other Internet retailers).
This is my own personal link to Crowdtap.
Bad review, I know. I'm still learning how Crowdtap works. Until then, this bad review stays.