I've ran into a few people who could be considered "scary"; my old guild leader and his wife were both kinda nuts. Took too many pills that come in unmarked bottles, got paranoid and antsy about everything, caused drama flareups over the tiniest little shit. And then there's the chick I hooked up with about a year and a half ago...yeah.
But then there's the six people I'm staying with right now, the dude I'm apartment-hunting with, and the other fifty-odd people I've met who all play and RP on Feathermoon. By and large, they're just interested in writing and want to get more out of the game than repetitive raid encounters and imbalanced player-vs.-player.
All in all, I'd much rather chill with someone who wrote a sixteen-page backstory for their paladin than a dude who rolls a character named "Kimjongil" and spam-yells my pals LOL.