SURBLs differ from most other lists in that they're used to detect unsolicited messages based on message body URIs (usually web sites) (...) Instead they help identify messages by the sites mentioned in their message bodies.

The fine folks at the eBiquity group at the University of Maryland Baltimore County have started to notice that tag spam is on the rise. The problem is particularly pronounced on del.icio.us.

This site is dedicated to working towards the elimination of the problem of Spam through a structured, layered approach to the problem.