I think it would be a good learning experience. I would like someone to tell me if they were blocking me so that maybe it would make me look inwardly to see if I am being overly obnoxious (overly, I personally think I have just the right amount). I might try to do better. Or I might think they were being overly sensitive.
People might be able to air their grievances in a non-confrontive environment and communicate minor points of contention (that build up over time). And then we'd all learn to communicate better to a wider portion of the forum.
Or, you know, it'll turn into more :steam:. Then again, maybe those people are already ignoring each other.