There is a contest to win a free wii on the forum of Slickdeals.net going on right now. They did this last december, and considering I'm the one that actually won last time, I know this isn't a scam. All you have to do is make a post in this thread to be entered:
If no one believes me, check all of my posting histories here at wiichat, you'll see posts from back in first quarter of 2007. where I talk about this.
And also I had never contributed any deals to the site, so clearly any site newbie has a chance.