Writing can be solitary work, but not when you write a tech column. Feedback pours in so quickly — by e-mail, on blogs, in online comments — that it’s almost real-time performance art.
True, there’s nothing quite like Twitter. It’s a Web site where you can broadcast very short messages — 140 characters, max — to anyone who’s signed up to receive them. It’s like a cross between a blog and a chat room. Your “followers” might include six friends from high school, or, if you’re Barack Obama, 254,484 of your most tech-savvy fans. (Incidentally, he hasn’t sent out a single Twitter message since taking office. Where are his priorities?)
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