The term Web 2.0 particularly bugs me. It's not a real concept. It has no meaning. It's a big, vague, nebulous cloud of pure architectural nothingness. When people use the term Web 2.0, I always feel a little bit stupider for the rest of the day."A big, vague, nebulous cloud of pure architectural nothingness." Heh, heh.
Not only that, the very 2.0 in Web 2.0 seems carefully crafted as a way to denigrate the clueless "Web 1.0" idiots, poor children, in the same way the first round of teenagers starting dotcoms in 1999 dissed their elders with the decade's mantra, "They just don't get it!"
But Joel is right. Technocrats can't even define the term "Web 2.0". That puts it firmly in the meaningless buzzword camp.
Update: Dare Obasanjo also flips the bozo bit on Web 2.0. He says, "The 'web 2.0' meme isn't about technology or people, it's about money and hype."