Share 'Is Twittering worth it?'

Just joined Twitter. And although I agree it is another networking site, and since I do want to spread the word out about my books, I guess Twittering is just another tool we all should be using. But I can't see the fascination in this new fad. Brevity is nice--and the requriement to be brief makes for a creative process--but what's the real attraction here? I like it in Crimespace because we can…