From Time’s embarassing “please buy our magazine” suckup article on Twitter:
Injecting Twitter into that conversation fundamentally changed the rules of engagement. It added a second layer of discussion and brought a wider audience into what would have been a private exchange. And it gave the event an afterlife on the Web. Yes, it was built entirely out of 140-character messages, but the sum total of those tweets added up to something truly substantive, like a suspension bridge made of pebbles.
And what could be more substantive … than a suspension bridge made of pebbles!