I have been taking surveys online for almost a year now and I have made thousands of dollars so far and counting. The key is to sign up for as many of the good ones as you can. The best ones are the sites that pay well and send surveys consistently. I have written a blog about this which includes links to some of the best paid survey sites I have found. You can check it out here:
http://legitimatepaidsurveysitesforyou.blogspot.com