Meebo is a web-based IM service that lets you IM friends on any service(AIM, MSN, Googletalk, etc.) from almost any web browser. All you need to do is set up a free meebo account, and link it to your existing IM accounts. There is nothing to download, so you can use it from almost any public computer. (Great for IM in campus labs or traveling!) All your buddies appear in one big list.

The DePaul Libraries use meebo's "meebo me" widget for our "Ask A Librarian" IM service. If you have a question for us ("Which database should I use to find articles on the global warming?" "How do I renew a book?"), you don't even need to have an IM account--you can just start talking to us via the widget on our "Ask a librarian" or Facebook pages. Of course, if you want to add us to you buddy lists, we are  dpulibrarian on Yahoo, AIM and MSN and  dpulibrarian on Yahoo, and dpulibrarian(at symbol)gmail.com.