Commonties.com will pay you 50$ to answer 20 easy questions (click the banner to see them). The questions are tricky, but that is worth doing! You can answer them in like 50 minutes and get 50$ to your PayPal or back account. Sounds very good to be truth.
I haven’t tried it yet, but I do want (can’t manage to find some time), but if you had tried it, please let us know, we are very interested in this one. Feedback would be greatly appreciated or even rewarded!