IM and ask a librarian services

Aaron’s posted a brief transcript of one of the text messages he got at the library which uses a lot of IM-speak. Let’s remember that the more people use IM, the more “ask a librarian” sessions can seem like another place to chat and goof around. We already have the problem of library students and other people “testing” the system. Is there a problem with virtual reference only working as long as it doesn’t become too popular?