Here at Ars, we all use Twitter and not just because it’s a kind of virtual pub, but because as a communication tool it sits in between immediate and long-term: it’s far more in-the-moment than e-mail or blogs, yet it’s more enduring than instant messaging or IRC. You can talk now with whomever is listening, and your tweets provide a breadcrumb trail of your life that anyone can catch up with at any time.
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