Twit
A person who depends on the latest technology platforms and social networking trends in an self-destructive, time-consuming manner that is not unlike crack cocaine or heroin addiction.
A: That twit with the i-phone hasn't stopped twittering since we passed through Toledo.

B: All the life has gone out of his eyes. He's just an empty shell - a shadow of his old self.

A: So sad... He used to be interesting and fun. Now he's a dork. Let's kick him.