I can see why social networking is popular, and that it has exciting benefits for people, but not all of us want to go there. I'm still a little hesitant to join the lemmings rushing to the waters of the web for friends and contacts.
As for libraries taking part in social networking, I suppose that this is part of the push and why we (as library employees) are taking part in the Discover 2.0 program. I recognize the importance of keeping up with technology, and although I am finding parts of this learning experience frustrating and exhausting, I'm glad to be in a place that allows me to be exposed to the "world out there"... a place that I would probably not go on my own. The world is always changing: adapting, (or taking the plung and learning to swim) I suppose, is the key to survival.