A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Informatik 2006 - Informatik für Menschen, volume 94 of Lecture Notes in Informatics, page 305--312. Bonn, Gesellschaft für Informatik, (October 2006)
Social bookmark tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. The reason for their immediate success is the fact that no specific skills are needed for participating. In this paper we specify a formal model for folksonomies, briefly describe our own system BibSonomy, which allows for sharing both bookmarks and publication references, and discuss first steps towards emergent semantics.