my faves are opinionoutpost.com, NPDOR, Zoomrewards, surveyspree, Lightspeed Panel. I get so many survey sites to my inbox I had to create a box labeled surveys to keep them straight. Then I also have another box labeled MyPoints to keep those emails separated too. Downloaded the Mypoints toolbar so I always know my total. I currently have over 10,000 mypoints. Just can't decide what to spend them on.
I get Paypal payouts on some and gift cards from others. One even still sends out checks. I have to be patient because I have to accumulate points but I don't mind. Whatever little bit helps, you know.