It's not so much that I use the Web as some kind of giant confessional with "like" buttons, but that I can just relax a bit more and talk about even boring and trivial things about myself. I even find it easier to be curious about others and their own trivialities, which I rarely am in physical space. I can breathe.
It is not that extroverted behavior is bad, but rather that when it's not leavened with restraint and listening, it can be limiting. Most extroverts would love exciting an audience -- and likely would have had trouble ending the meeting well, instead over-selling to the point of diminishing returns.
Colby Keller is one of gay porn's most prolific and exuberant performers, so while it may seem contradictory that he identifies as a natural introvert, his marvelously introverted reflections on introversion demonstrate that introverts aren't necessarily shy: We just aren't interested in small talk.