I rarely go in the Summit myself (not just because I just recently got back in game: I avoided it for a good year before leaving the last time I had an active character). Yesterday I had a wonderful time RP'ing my character being bored and having fun discussing faith and other things. Then, someone comes in and randomly says something to the effect of "Your very existence is repugnant, I want to stab you in the face." Never met the person, never seen them before in-game, and it just didn't feel very nice.
My response? Mute. Problem over. I had a wonderful rest of the evening. I wouldn't have actually been in The Summit had it not been a wise thing to keep a public presence due to a request I made on IGS.
My alts are fairly obvious, for even more obvious reasons. I enjoy my characters, and I learned to just do what I do and not return the worst that I get.
That said, the Golden Rule usually applies. Would you rather someone point out your errors, or for them to commit the same aggravations upon you? The answer is probably obvious, but in the heat of the moment it's hard to see (and sometimes even in hindsight it can be hard, if not harder).