How Much Does Your "Real Life" Personality Differ from Your "Online" Personality?

Online I am more serious because this is the only place I can have an interesting and serious discussion. Im not too close to people in real life and my conversations do not usually differ from casual. On the internet I have a chance to discuss social and philosophical ideas I cant in real life. I mean c'mon, how many teenagers you know of want to talk about that sort of stuff? Im alot more funny and goofy in real life, and I like it that way.