Are MMO communities inclusive or exclusive?

In my opinion, one of the best aspects of MMO gaming is the communities that form around these titles (and MMOs in general). The excitement and passion of these games can foster spirited discussion and a sense of belonging for those looking to connect with like minds. Friendships can and are formed, groups band together for a shared purpose, and game communities develop their own lingo and histories.

Yet these communities can also be one of the worst aspects of MMOs. They've been known to turn forums into pits of decomposing humanity, trolling and ranting with no end in sight. They can turn on an individual who doesn't know all of the mores and unwritten rules of how things are said and done. They can certainly rank a person's importance based on how long and how involved he or she's been with the game, relegating newbies to an eternal kiddie's table of condescension.

So which of these do you find to be true more often? Are MMO communities -- especially ones surrounding your current games -- accepting and inclusive to newcomers, or are they elitist and exclusive?

TH