It's an Ensayo Thing
Promiscuous use of the label "Web 2.0" is the hallmark of the entrepreneurial developer who's going "ftw" -- "for the win," in Web game parlance.
The Spaniards have another word for the kind of discourse that collects around the "2.0" label: they call it "ensayo," the defense of a personal and subjective point of view without either documentation or even a systematic framework for the discussion. (I got the es.wikipedia page translated for me by SYSTRAN) "It's Web 2.0 because I say so" would be another way of putting it, but saying "I think it right to offer an ensayo argument" sounds much more erudite.
At this point, though, I need to let you in on the joke. What you've been reading is a sort of Mad Lib: I began with the list of Google's most often requested definitions of terms during 2006 and attempted to put them together, in order beginning at #1 -- heaven help us, "promiscuous" was followed by "Web 2.0" on that list -- in sentences that actually made sense. I got all the way to #6 before I decided I'd pulled your leg hard enough, and I think that I hope I succeeded -- but I'm kind of shocked that it wasn't a whole lot harder to do.
Let's hope that what we care about in 2007 has a lot more substance than this.