InboxDollars.com - Similar to the above click-banner-and-give-information system, but you get money instead of phone minutes. Earned thus far: $16.85 - the best thing about this one is that they e-mail you and credit you immediately. I'd suggest doing the 100% free offers.
For annoying, multi-page surveys/signup thingies, don't read the questions - just say no. It's like drugs. =^.^=