[TABjornbrandr]

Originally Posted by FaDeBadger

By that same token I can refute everything you just said by having a different definition of bm. This is exactly why people don't agree on things like no gg or no glhf as being bm or not.

90% of my games I don't gl hf because it's simply not true, I don't want them to be lucky or have fun. I'm playing the game for me and solely for me. If I win, or lose but still think it's a good game, I will gg (note: I don't mean offensive gg I mean in response to theirs). But I'm not going to throw out a meaningless pleasantry just because it might be seen as rude if I don't.

I'm not saying that's my definition of BM, I'm saying that someone could construe the term "bad mannered" in that way and as such perceive a large portion of the responses in this thread as supporting "bad manners".
If you're wondering what I actually think, I'd be more inclined to say that saying 'hfgl' and 'gg' are good mannered, but not saying them isn't necessarily bad mannered, but rather a personal choice.