I can’t think of a reason I would need to screen names.
Well, let’s say that you wanted to say something ridiculous and controversial, but were afraid to be all alone in the argument with everyone else against you. You might think it’s a good idea to create alts to back you up and make you seem normal (oh, what a slippery slope :))
My writing style and opinions would be readily apparent, so what good would a new name do me?
So is the style and opinions of the biggest offender, but that doesn’t seem to stop him 🙂