It's only rude if you post it in a way were you are saying "look at me. i'm better than you because of....." I never post vacation info because well i never go on vacations or if i do i don't want to deal with some of my family who would make comments because their idea is a lot different than mine and mine is wrong. Way i look at it is this. It's your account to do what you want and if other's don't like it that's their issue not yours.