>I'm surprised at how some wax lyrical on how amazing reddit is. It's just a minor tweak on a long trend of existing prior art (the subreddits). Personally I think it's a cesspool full of trolls. Proggit (programming.reddit.com) is (IMHO) just awful.

Reddit is the easiest way I know of to generate a targeted community. I've set up subreddits, forgot about them, and come back to find them with thousands of members and fresh content. Are there other comparable ways to do this?