Introvert or Extravert?

I read this article a few weeks back and for some reason there was a certain degree of satisfaction I gained from it. Although I don't necessarily like the tone the author takes on certain points on why people should leave him alone, I could still relate to what he was trying to convey.

Sometimes I feel bad because I tend to go out of my way to avoid people. It's not that I hate them or anything, but there are a number of times when I'm working on something in my head and to get interrupted, even with a simple social greeting, can mess my small brain up.

Don't get me wrong, I don't sit around in my basement with the lights out in the hopes of never having to deal with anyone. Rather, I tend to interact better with others in a social setting when I've had the needed time alone to charge my batteries in order not to appear closed off.

So, in the event you see me at my computer in the coffee shop and I'm staring intently at the monitor, or I don't make it to every mass gathering, it's not that I'm avoiding you because I'm a grumpy old troll under the bridge. I'm just an introvert.

Where do you fall? Party animal or Unabomber? Nothing wrong with either one.