Have you thought about using social networking to teach your library patrons about a topic that is important or even crucial to them?
There are lots of examples but one that I came across recently involved Squidoo. On this site you create lenses that cover a given topic. This lens entitled, Is it Plagiarism? is designed to teach its readers all about this all important topic. What topics are important to your library patrons and could you use Squidoo or another social networking site to teach them about these topics?