I've been a member of Paid Viewpoint since January and really enjoy the surveys over there. To make it even better, I'm earning money for taking those surveys. I get about 3-5 surveys per week and they only take a few minutes to complete. After you reach a Trait Score of 9000, the surveys earn you more.
It's not a lot, but the more friends you refer, the more you can earn. If you'd be interested in earning a little extra cash, head on over to http://paidviewpoint.com/?r=e8b2u and sign up!