People like Dave Winer are getting pissy about Twitter - http://www.scripting.com/stories/2008/04/22/howToDecoupleFromTwitterNo.html
"How will we manage without Twitter? Necessity is the mother of invention, imho."
What a bunch of bullshit. 98% of stuff on Twitter, is, as Matt Maroon pointed out, "Going to the gym"/"Ugh, clients are so lame"/"At elitist convention/party/etc you weren't invited to, I am so awesome".
How is this valuable?
It's the information equivalent of sugar water.