theodp writes "TIME has seen-the-future-and-it-is-Twitter. Slate, on the other hand, is more fascinated with the phenomenon of orphaned tweets, the messages left by people who sign up for Twitter, post once, then never return (not unlike one-blog-post wonders). While some orphan tweets betray skepticism about microblogging ('I don't get it... what's the point of this thing?'), other one-and-done Twitterers demonstrate keen enthusiasm before disappearing ('I'm here!'), and some tweets hint that tragedy has cut a promising Twittering-life short ('it hurts to breathe. should I go to the hospital?'). Slate notes that studies of Twitter accounts by Harvard and Nielsen suggest the service has been better at signing up users than keeping them, including the one-tweet wonders."