I'm one of the serial IA-users on this board, and I think posters here have a good point- the phrase does tend to take on a life of its own. Perhaps using a different phrase to correct peoples' assumptions might be more prudent. I do, however, object to people making inaccurate generalisations. "All people who do Y are Xs" or "Everyone who does (non-etiquette-related thing) is rude" never ever sit well with me.