All of these are hackneyed ideas that have either failed before or were capable before with “old school” blogs, IM, SMS, etc. Nothing about Twitter adds magic pixie dust here that suddenly makes a weak idea impossibly compelling.

If you’ve read the Black Swan, you’ll recognize the pattern: it’s as if everyone is expectantly planning for the next great business or app to come out of Twitter, when there’s much more reason to believe it will come from someplace else entirely.