[timcederman]

Twitter is absolutely mainstream now. It's quite weird - in the last several weeks almost all my friends and family have signed up. I'm not sure what the tipping point was, but celebrities appear to have a lot to do with it.

5 million users now -- I expect this to balloon exponentially very shortly.

[badjoke]

Kevin and Alex from Diggnation were on Late Night with Jimmy Fallon a couple nights ago talking about twitter and doing an experiment. It's seeping into the mainstream very quickly, but it'll die out just as MySpace and Facebook are.

[herval]

I can't remember the last time those guys predicted anything right...

[unalone]

Facebook's not dead; MySpace is still the top music web site on the planet.

MySpace may be dying slowly: I don't follow it enough to tell. Facebook is growing incredibly fast.