Whither Twitter?

My first reaction to Twitter when I first came across it about a year and a half ago, was, like a lot of other people, a bemused shrug. 140 characters? Is that it? I couldn’t really see the point. In communication terms it seemed to be a retrograde step. But because a few people I know swore by it, I signed up about six months ago and though it still took a little while, I’m now hooked. And I’m not the only one. In the last year, Twitter's seen the exponential kind of user growth enjoyed by previous internet success stories like mySpace, YouTube and Facebook, with unique users often d...

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