In an effort to map some of the complex web of relationships amongst UniSFAns (and possibly as a cool programming project) GrahameBowland gave us the UniSFA Smut Tree (currently offline.)
Previously the UniSFA RootTree had been published in Piffle, although the Smut Tree allowed users to log in and update their own data, hopefully making it more complete. Links indicated if one or both partners shared the same opinion about the extent of their interludes with each other.