Thanks!

I thought about FB integration, but decided against as I wanted to have a transparent privacy model. In my opinion the privacy becomes somewhat opaque when FB gets involved. I'll give it a second thought though. The natural viral factor is appealing.

Ads are somewhat obvious. If I placed them on the comment page related to each link it might be possible to make them somewhat targetted. I hadn't thought about sponsored content, thanks. It probably ain't relevant yet though, I guess the site needs a certain size before it comes to that.