That's true, but part of it is human nature. If someone new comes aboard, the natural reaction is to start making judgements ( usually with litte or no information ). The questtions start : Is this really a Red Sox fan ?, Is this a kid, old guy, or somewhere in-between ? A guy or gal. etc.
More use of the Introduction Forum, Public Profile, and even the Get to know your members Thread, would be helpfull. Just a thought.