This site: PatentMojo is very interesting. It enabled you to keep an eye on new US patents. As IP (intellectual property not Internet Protocol) becomes more and more important in the technical field, so does the value of knowing who's doing what. PatentMojo offers links, RSS feeds, and a personal portal, ith links to the United States Patent Office and to individual patent applications. Sadly, I can't yet find any of my Dad's patents on there, but I'm looking!