Tagging in libraries allows patrons to add notes or labels to physical materials to help organize and find items. Tags are easy and inexpensive to create and apply. Using instant messenger for reference services provides an accessible way to help kids, teens, and young people who commonly use IM. However, adopting new technologies presents challenges like learning curves and concerns over staff time commitment or privacy. Choosing the right IM client that is easy to use, secure, and integrates with the library website can help address these issues.