Over at the Alternative Teen Services blog is an informative summary of public libraries using various "library 2.0" tools to attract and communicate with teen audiences. Also listed links to libraries using pod- and vod-casts.

If your library's audience includes this younger set (and even for university libraries whose students are a bit older) -- take note. These technologies are the way your next generation of library users (i.e., people paying, one way or another, for the library) is familiar with communicating.