This article is to help those in libraryland learn more about social network analysis (SNA). You will see its possible uses within your library among your employees and volunteers, and also among the patrons who attend ongoing programs at your library. Social network analysis is the mapping and measuring of relationships and flows between people, groups, and organizations and also computers or other knowledge processing entities. If this sounds technical, it is! But we'll break it down for you in hopes that you'll be interested in SNA and start using it.