David Weinberger's.
That's David Weinberger's (or the Cluetrain's) phrase, not mine. But it is definitely related to my belief that a new organizing principle is emerging and will continue to do so.
Here's another take on it - blogging is wirearchy in action, and blogware is (therefore) a powerful and subversive (to some people ;-) tool.
Via Dave Winer:
Ed Cone: "The most powerful piece of software inside Microsoft may be the $40 application from a tiny vendor called Userland that Robert Scoble uses to write his weblog." 
[wirearchy News]