I like the basic idea behind Library 2.0, using web based technologies and tools to enhance and promote library services. Using any new tool is generally fun once you get the hang of it. I think it is just a matter of looking at the tool and saying how can we do everything we do well in a new way?
I'm seeing alot of jargon tossed around in the materials talking about Library 2.0. It has the effect that jargon often has--it makes the topic at hand seem scary at worst and semi-unintelligible at best. When you're trying to promote something like Library 2.0 that is all about new means of communication, try not to shut people out by talking down to them in jargon filled extravaganzas.