I know this site is a good one, as they've just paid $10 into my paypal account. Every little bit counts, right? And that was for me not being particularly diligent with the surveys they sent me, when I get too busy I don't get to it in time and the survey fills up.
Clicking on this ad will take you to them...
For most surveys you will receive Lightspeed points that are redeemable for gift vouchers, or you can elect to change them into cash and have them credited to your paypal account. And you get an entry into a $1500 prize draw for each survey you fill out as well.
This one's working for me, give it a try!