Can you match your personality to your choice of social media network?

As I watch the evolution of social media and talk to my clients, I think there's a link between your personality type and the social media networking site you choose to promote your business most often. 

Introverts: If you're an introvert you will feel most comfortable on Twitter. Of course the millions on Twitter are not all introverts.  It is just a great medium for saying what you want and getting the heck out of there. No time wasted trying to chat anyone up, you know who your followers are.

Extroverts: For extroverts it's Facebook. You can ask people to become your FANs and talk about the great event you're holding next. It's a big party and you're the lucky host.

Something to think about if you still haven't decided which to start with. It's just my theory, let me know what you think.