When I read posts like this, I really have to ask myself what is the measure of success for incorporating new technology: the fact that it's been incorporated at all (nice) or that it's actually being used (even better).
"[S]ocial software, Weblogs, linklogs, folksonomies, wikis, podcasts, RSS feeds, and Web services" are definitely advances in the Web as we know it. I routinely use many if not all of these myself. But their simple inclusion (whether real or imaginary) into a library's website doesn't by itself constitute a "success".
It's important when trying to incorporate the tools of Web 2.0 that we don't forget the lessons of Web 1.0: you don't shove technology down the throats of your users simply because you've become enamored by it. Rather it's your users who define what your priorities are and whatever they want, you'd better be in a position to deliver on -- big time! That's the measure of success that counts.
Everything else is bupkis.
UPDATE: Apparently this has been on the minds of a couple of people. Have a look at Sarah Clark' "Dark Side of Library 2.0"
