MeatballWiki | RecentChanges | Random Page | Indices | Categories
CollaborativeFiltering system developed at the University of Minnesota. Trialed in a number of venues, including UseNet in the mid 1990s, though these are now largely defunct. Core of the [MovieLens] movie rating/recommendation system.
FYI, GroupLens is also the name of the research group (as linked to above), and in that capacity is alive and well.