I let stuff go for the sake of being friendly (most of the time) unless it's a big deal and has meaning to me. It drives me crazy when someone feels the need to correct someone else about every tiny, insignificant thing (especially if they aren't actually correct ).

Does it bother you if somebody corrects you all the time? Maybe I've just been dealing with tactless people lately but I'm over it! At least correct someone in a polite and kind way!!