I have just discovered Swagbucks and I am hooked!
It's a Search and Win site - with some really great prizes! I've already won a $5 Amazon Gift Card.
You win Swagbucks by using their search engine, then you can trade the Swagbucks in for entries into their "Swagstakes". They have some great prizes, right now you can enter for a chance to win a $2500 Amazon Gift Card. There are only 50,000 entries being offered. 1 in 50,000 chance at $2500 is not too shabby in the online sweepstakes world.
Apparently, you earn even more by having friends sign up under your referral. I wouldn't know, because I don't have any yet. So feel free to sign up under me - we can all start winning! http://www.swagbucks.com/refer/Tonibelle