I found the various library twitters quite interesting. Most were used as a type of bulletin board to advise tweeters of up coming events in the library. Some had conversations with other library staff at different libraries.There were links to different articles and topical news such as the one in the Vancouver Library Twitter regarding library service cuts. There was advice on how to fix IT problems on another Twitter. The Australian and Library Information Association uses its twitter to inform members of courses they can undertake. There's even a mini quiz on the New York Library site. All about books of course!
I think Takapuna Library should have a Twitter site!!!