I think there's a Jurisimprudence Law about this.
mbimomma posts a rant to bad_rpers_suck. A lot of the rant has to do with how her (I'm assuming) game doesn't allow homosexual characters:

So here's the scenario:

*player decides to join RPG
*player agrees to every rule in the RPG, including keeping things canon and PG
*player plays for nearly a year
*player abruptly disappears without notice for two years, leaving people who had connections with his character playwise in RPG limbo
*player decides he's bored (admits this) and shows up claiming he wants to return
*player then says he left because of one rule in the RPG, which pretty much didn't allow him to have a gay character
*player goes off on a whiny rant about said rule, demanding the mods to remove it because he feels alientated
*player says this at the same time claiming that we're not keeping things canon in the show the RPG is based on (read: the show the RPG is based on didn't have any homosexual characters AND was a children's show. This is what the players agreed on)
*co-mod tells him the reasons for the rule and says that maybe this isn't the RPG for him (plus there's another half-canon RPG out there that'd probably make him feel more at home)
*player says he wants to rejoin THIS ONE because "it's unique in its own way"
*player throws hissy fit that the mods - despite their telling him that they don't care what his sexual orientation is but are abiding by what the REST of the RPG cast feels about this sort of situation (i.e. they prefer that there weren't any gay characters if we're keeping the place canon in accordance to the show itself)- are kissing up to a bunch of homophobes
*player leaves in said hissy fit, swearing he'll never return
*player then rants about it in his LJ, in the end making a public apology and thinking about joining
*haven't heard anything since

(Bold hers.)

While the general conesus is that the guy in the rant was a jerk, many BRPS regulars express the opinion that a no gay characters rule is arbitrary or that they wouldn't join a game that didn't allow gay characters. People debate staying canon vs. close-mindedness and they're off!

Pretty small, but entertaining enough.