Siteseer is a web-page recommendation system that uses an individual's bookmarks and the organization of bookmarks within folders for predicting and recommending relevant pages. It utilizes each user's bookmarks as an implicit declaration of interest in the underlying content, and the user's grouping behavior as an indication of semantic coherency or relevant groupings between subjects. The system also treats folders as a personal classification system which enables it to contextualize recommendations in classes defined by the user.