Fixing the Community Thinktank!

[Necromunkey]

Its obvious that some people found in the duty finder (and even in built parties within a single world) are extremely rude to others.

-Some bully those that do not "fulfill" their role to a specific standard.
-Others are self focused and leave mid duty after a single wipe.
-Even more are entirely unhelpful to other players possibly new to specific content (as Klutz64 pointed out).

While its probably impossible to keep people from being as**oles to one another (internet),
What ways can you think of to reduce or deter such behavior?

(Edit: Readability, added more community problems, anecdote removed and posted in a separate post)