They're formed a guild called "The Legendary Sisterhood" over on Sentinels' Horde side-- it consists only of Blood Elf female mages and priests. It's a weird cross between a cult, a party, and a griefer guild-- the denizens of Sentinels have reacted to their actions with the expected confusion. We only know there are rules: every member of the guild must have a name that starts with "Sister" (as in Sisteramy), and there is a hierarchy within the guild, topped by a dark and mysterious Queen. It's an RP guild for non-RPers-- there are weird rituals, various attacks on opposite faction capital cities, and just general mayhem. In short, it sounds awfully fun.
I'm not a huge fan of RP-ing (our own David Bowers knows much more about it than I do), but I'm not sure this is RPing or not-- they're just having fun with an old fantasy mechanic of the secret society and playing together in a way that doesn't necessarily require reaching the endgame. The guild is the character in this case, not the players themselves.
(Post updated after the jump)