In 2011 I completed 13 surveys for Pine Cone Research at $3.00 each for a total of $39.00.
This is a lot less than I made from them in 2010, which was $67.00. Still, it's pretty easy money! This is an arm of Neilson Ratings, and you must be invited to join. If you ever see an ad for their surveys, click it and get yourself in.