I am unashamedly advertising SwagBucks on my blog (over there on the right). You can use it to build up points and buy stuff... practical stuff like giftcards to iTunes or Barnes & Noble. Simply use it as your search engine and every now and again, you'll be surprised by a new Swagbuck (it makes surfing the web many more times exciting). Click on the ad to sign up and then I'll win 'bucks whenever you do.
Have a good day.