It's kind of hard to avoid isn't it? I notice it a lot when a bunch of nobles suddenly stop arguing IC because they came to an OOC agreement on the forum. Maybe thats a good thing though.
Personally I think it's bad, really bad. No one can prevent players to chat or whatever but this topic is becoming an IC/OOC mix and I think this can harm the flavor of the game.
The info I read here I use them IC as gossip or coming from untrusted sources