The web has been a real boon for introverts...the asynchonicity of email, the information-rich messaging of Twitter & Facebook, and the social acceptability of conducting much of one's social & business communications online all play to the introvert's strengths.
A text message, a Facebook message, a tweet -- each is a discrete, articulated piece of information being shared. Rather than riding the texture of a live conversation to figure out how to give and receive information, people are now used to simply pushing their thoughts out into the world, to be responded to at some undetermined future point. Even voicemail messages are now more often the point of a phone call than an actual conversation.
