I am really different online, tending to have a much better sense of humor, a sharper tongue, and I generally use different grammatical constructions than I do in real life. Possibly it's because I can get away with it here, possibly it's just because this makes life more fun.
But to know me online, half the time I'm switching up which english I'm speaking (BSE, some western/southern accent, yiddishly inflected english, etc).
How about yinz? (a word I'd never use in real life.)
Comments welcome! Introspection and Extrospection (that means, if you think I sound corny or just plain dumb, let me know!)