DisQus

Blog Comment service.

http://disqus.com/

built with Django!

used on thousands of blogs

• Fred Wilson

• Dave Winer

• FakeSteveJobs

• Matthew Ingram

If 2 blog posts are about the same "topic" (how precisely/narrowly would you define that), and both those blogs are using DisQus, can/should those Blog Thread-s be merged in some way?