Not an insult, but a comment on my recent experiences with Twitter . I admit it has taken me some time to 'get it' and perhaps it is also one of those services which has build a critical mass of like-minded people in order to demonstrate its usefuleness. Anyway, a few weeks ago I took the plunge and yesterday really go my first taste of how useful it can be. A colleague attended the mashed libraries event, which was also of interest to me, and I followed the day's events in real time using the hashtag #mashlib08. It gave much more immediate feeback than waiting for the posts or a report back and additionally put me in contact with people I've never met, but have discovered interests in common.
As an experiment I think this is a success and one to continue.