I can't speak for every introvert, but I will say that, for me, introversion does not preclude me from maintaining a blog, Twitter, etc.
Yeah, I don't broadcast my life -- but I talk about things that are interesting to me, and the Internet gives me a nice medium that I can use without feeling the willpower drain that comes from having constant face-to-face interaction.
Yeah, I don't broadcast my life -- but I talk about things that are interesting to me, and the Internet gives me a nice medium that I can use without feeling the willpower drain that comes from having constant face-to-face interaction.