On a related note, GalleyCat also mentioned this Granta article on "The Web Habits of Highly Effective People." They quoted author A.L. Kennedy: "I avoid going anywhere near YouTube because that can eat up a day. I don’t blog or Facebook. If I want to write, I’d rather do it to some kind of definable end."
True, but blogging has its own rewards. The trick is not to get addicted. Me? I can stop blogging anytime I want to....