This has only happenned to me once but I see it happen on other threads too and it really gets my teeth gnashing. Someone starts a thread then two or three others give the OP a one word answer before launching into a conversation between themselves with injokes etc and then the whole thread end up being about them and not about the subject the OP originally brought up. I am a bit pre menstrual and probably a teeny bit irrational but I just think it is rude and wouldn't happen in RL.
OK, will go now after having my rant