This is interesting... from Leo Laporte: Buzz Kill. In which he noticed that everything he was posting to Google Buzz wasn't actually getting posted, and nobody noticed, not even him!
"Something happened tonight that made me question everything I've done with social media since I first joined Twitter in late 2006...
"It makes me feel like everything I’ve posted over the past four years on Twitter, Jaiku, Friendfeed, Plurk, Pownce, and, yes, Google Buzz, has been an immense waste of time. I was shouting into a vast echo chamber where no one could hear me because they were too busy shouting themselves.
"I should have been posting it here all along. Had I been doing so I’d have something to show for it. A record of my life for the last few years at the very least. But I ignored my blog and ran off with the sexy, shiny microblogs.
Related, from Paul Carr: Thnks Fr Th Mmrs: The Rise Of Microblogging, The Death Of Posterity.
(I must tell you, I love having my archive. It's like a diary, only linked to the world.)
I honestly think this microblogging stuff is a fad. An amazingly popular fad - think CB radios - but a fad nonetheless. We'll see.