I see ads for these type of sites everywhere, they get a lot of traffic and they make you click a bunch and have tons of pop-unders. I'm really curious. http://wahoha.com/ http://www.avalanchers.com/ http://2leep.com
You display other peoples posts on your site, they display yours on theirs. Sort the content on your page right and you could actually probably get killer productivity and grow traffic quick.