I think the first time I ever heard about it was when Firefox banned Dissenter from their addons. Dissenter to me was a genius idea that has an ugly userbase. I'd love to have a version of Dissenter that isn't populated entirely by bigots.

I think the idea of Dissenter really has some value, you walk along the web for all sorts of reasons, and then up in the corner in your toolbar you see "oh, someone from my community has said something about this". Rather than the social network taking you to a site, the site takes you to the network.