Patent troll starts suing websites that use roll-over images...

Ars Technica is running a fantastic, facepalm-worthy story of patent trolling gone wild. Webvention is the patent-holder in question, and their entire operations revolve around a single U.S. patent: 5,251,294. The patent abstract opens with one of the vaguest and most terrifying sentences ever conceived: "An interactive information environment for accessing, controlling, and using information."