Do you generally point out the mistakes people make, or do you quietly let it go? What's one mistake people make that drives you crazy?
But anyhow, I hesitate to correct most folks, because it's amazing how offended or upset they'll get. I accept corrections of words I don't know how to spell, or if I've slipped up, because it helps me learn and be more careful with my super fast typing. But I don't find others to be so inviting. That in itself is quite irritating, but since it's everywhere on the Internet (except LJ, for the most part!), there's not much I feel I can do about it.