Who's to say what "representing yourself appropriately, while 'wearing' Greek letters" really means?
Sidebar: I partially agree with starang21 (as usual

), but I do think we have a "duty" to uphold certain principles, while we represent our organizations. On the other hand, some people have no personal convictions, but only have any sort of "class" or pride in themselves WHEN they are representing their organizations. So, I think we should seek a balance.
So, anyway, back to my original point: We've all read (and perhaps said) some things that may be (or have been) deemed inappropriate by others (some of whose opinions DO count and others whose opinions DON'T). With that in mind, let's not put more weight on this whole issue than need be.