In Tune with Tweeting?

Since hearing about twitter a while ago, I always assumed it would be a passing fad--more so than some of the other Web 2.0 applications. Personally, I would not choose to twitter because I feel time-deprived keeping up with the connections I already have through more conventional means. BUT we live increasingly in a sound bite world--twits and tweeters fit perfectly, and I expect this to grow and become even more popular in the future. How can the library world use this? I suppose engaging a (usually) younger public interested in this sort of communication will be one use--and I saw some young adult librarians doing just that on the site. I think tweets about what we are all reading would be useful in helping people decide "what's next" on their reading lists. In our local paper, we have a "tweet" section called bits, and these short announcements could be digitalized in a tweet. What I suppose will happen is a certain segment of the population will support twitter, another blogspot, etc. so that libraries and other institutions will simply have to support and utilize all of them to (try) to keep everyone happy and up-to-date on what is going in the library world. I don't know if this just ended on an upper or a downer!