Yes, I have noticed that Sammy and a few select others have been told that "Was that reply really neccessary?", although I have yet to encounter that fateful reply. But I have one question to ask.
If you reply to one message by one person, and then right after you reply to that message then you reply to another by another person, is that against the rules? It seems like it shouldnt be, even though its on the same thread, 2 people are talking about 2 different things.