I don't recognize myself in very much of what Aaron wrote. Oh, a little with the distraction thing, but at least for me it's just the easy availability of distractions. TV, video games, even books can still do that to me too.
I also wonder is just how much people are different. I sometimes describe myself as asocial; not antisocial, asocial, in that I need very little social contact to survive or be happy, and I top out pretty fast.
(BTW, I'm not fishing for pity and you might get the wrong impression from "asocial"; I'm happily married, have a kid with another coming up, and so on. I need more than 0 and I know that, it's just I have lower needs than most people seem to.)
Guess I don't really have a point, except: This sort of thing should be taken seriously. The internet is a truly new social phenomenon, and while I believe the positive outweighs the negatives (at least for most people), the negatives are real, and we should figure out, both personally and collectively, how to ameliorate the very-real negatives.
(andreyf's post highlights one thing I get from the internet: I am interested in tech and politics, but I vastly prefer online discussion, with its tools, over real-life discussion of those topics. It also keeps my wife and friends happy since they have little interest. On the other hand, I don't smear wife-and-friends all over the Internet; I eschew Facebook, and still haven't mentioned my soon-to-be-1-year-old son on my blog yet. I also wonder if perhaps this sort of strong partition is a good idea.)