There's a website out there that you can type your blog's URL into and get a reading on what the writing style says about your personality type. It uses the basic types from the Myers-Briggs test and seems like a fun idea.
Mine came back as ETSP - The Doers. Here's what they say about me:
ESTP - The Doers
The Doers are happiest with action-filled work which craves their full attention and focus. They might be very impulsive and more keen on starting something new than following it through. They might have a problem with sitting still or remaining inactive for any period of time.
If you've got a blog of your own, see what Typealyzer says about you. Or put in some of your favorite places on the web and see what comes up. Just a guess, but I will assume you're not going to see a lot of introverts with a blog.