That is a useful writeup. The Semantic Web as a technology has faced an uphill battle for acceptance but that is hopefully changing. BTW, here is a PDF link to my new SW book: http://www.markwatson.com/opencontent/book_java.pdf

The book is just about done, so you can ignore the work in progress warning on the cover page. This is the Java/Clojure/Scala/JRuby edition. The Common Lisp edition will be delayed a while because I just accepted an AI gig that is going to require all of my focus.