Twitter
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Really what's the point of Twitter? What need does it fill? What problem does it solve? What desire does it meet? Basically "Twittering" is a way of letting the world know what you're doing at the moment. At least that's how most people use it. You can update your account through their website or by text message.
I suppose that some have a desire to let other people know what they're thinking or doing at any given moment. To know that other people care about what they're doing! I don't know about you, but I don't really care about what anyone is doing at any given time.
I have enough of a life that I don't need to engage in high-tech voyeurism!! Do people really want to know my daily routine, when I go to the bank or to the grocery store, or what I'm doing at work at any given moment? I have a hard time believing that people do. And really, what truly substantive thoughts can you communicate with less than 140 words? The problem with a lot of social networks is that they encourage superficiality of thought.
I might just sign up for an account to see what its all about! Twitter does have some interesting marketing applications that make it a worthwhile venture. But I don't understand the social application of the site: if you want to let someone know what's going on, send a text message or call. Why sign on to Twitter to do the same?