I found out about taking surveys from an ad someone here had. The site is vindale.com I have found I have actually made money doing this. You do need a credit card though. Mainly you need it to sign up for free trials, if at the end of the trial period you don't cancel then bingo, they charge your card. For instance I made about $30 signing up for blockbuster free trial. I got three movies to watch free and then I cancelled. I had to fill out a ten minute survey that was very easy. Some surveys have acquisition fees or shipping fees of the free samples but those are pretty minimal.
You should try it unless you are shy about picking up the phone and cancelling a trial membership, or think you will forget to. I myself have a huge calendar right next to my computer right next to my phone Otherwise try it! So far I've made $76 for about a half hours work.