Sarah at Librarian in Black has a good post that will help you arm yourself against IT folk who claim allowing IM in a library is too dangerous. Sarah’s had a lot of experience in this area, and provides links to the two articles security people always seem to quote, along with links to three additional (more up-to-date) articles you should read before doing battle with IT. I added a link to Sarah’s article in the relevant section of the Library Success Wiki, and noticed that she seems to have become the expert in the area of IM Reference…