IMing

I've been using this off and on for years. I've pretty much only ever used it to talk to friends and family. But I think it would be helpful in the work environment. That is as long as people are at their desk and can respond. If they're not though, they will see your comment and can get back to you. I have worked in public libraries who have had this as an "Ask Your Librarian" page. I always really liked it and found it to be helpful. But then I always get a little worried about the loss of human contact.