Semantic Web?

New Scientist has an interesting article, "'Semantic' website promises to organise your life" (http://technology.newscientist.com/channel/tech/dn12903-semantic-website-promises-to-organise-your-elife.html?feedId=online-news_rss20) which talks about Twine, currently in beta testing. Twine uses annotation and natural language processing. It'll be interesting to see how it works when it's released. The article mentions other semantic services in development: Powerset, True Knowledge and Freebase.