I think at the end of the day the crux of the matter is that my values and beliefs may not be that person over there's values and beliefs and as much as I might want, I can't shape a community to suit how I'm comfortable with how people behave because of my own cultural/social background - but what I can do is shape my friends list to suit and at the end of the day that's probably all we can really do.

Like 'friends list', I think 'community' on the internet is a bit of a misnomer when trying to hang that term and all it's baggage over such a disparate group of people whose only point in common might be a tv show.