The boards did not create the tipping procedure. I have been tipping housekeepers for 30 years. I do think that message boards do create discussions that share other people's choices, and if you had never been exposed to choice, you might get that impression. I do agree that a tip should not grant you better service, and itn Disney, it will not. For me, it is a simple thank you for enhancing my vacation, and well worth the few dollars a day.