I am actually pretty extroverted, but I guess you could say that I'm an extrovert with issues. I used to test as an INTP, not because I was introverted, but because I was shy and scared of people. I was also fairly depressed at the time. As I've grown more comfortable with myself (and less convinced that people secretly hate me), I've become much more social and talkative. Being in college helps. For the first time in my life, I'm surrounded by guys I don't intimidate, and that's super nice.
I do like to talk to people I randomly meet in public. It's fun. I do, however, often end up cutting a conversation short when the person I'm talking to starts to seriously hit on me (I'm super oblivious. If I notice you hitting on me, you're pretty blatant). Particularly if I'm getting hit on by a 40 year old. That's twice my age... So, yeah... I'd like to talk to strangers more if they didn't tend to come onto me. (On the other hand, I can intimidate them easily if I want to, and then they usually piss off).
I dunno. Once I figured out that I could have friends, I became fairly social. At the same time, I still prefer solitude to dealing with idiots and asses.