What I suspect you will see coming up in the future might be things like “Friday night fights’ where one web community sends a team of three or four to debate a team from a different community in live forum with some basic ground rules.

E.G. DKOS vs. LGF on some topic, or HotAir vs. LGF on some topic.

Of course someone has to come up with the “Code Duel” for that, and create the media and infrastructure, but you can bet someone will soon.