There is this site called Want want WANT IT that opened up a few months ago and they have been giving away cool tech like a Kindle Fire, Lenovo tablet and an unlocked Galaxy Nexus. Now they are giving away a iPad 3 16 GB and it is awesome! Get to it quick though because it ends on June 1st:
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I was a little skeptical at first, but they never ask for money (it is completely free) and they are secured by Site Lock. They also have a bunch of pictures of their previous winners on their reviews/testimonials page. So far, my experience with them is nothing but good. Just give it a try guys!