The Semantic Web is discussed these days in San Francisco during a W3C seminar.
Apparently a lot of people don't understand why it is important, or what it is exactly. But it's just what the name suggests, the web but with a meaning. A meaning that could be usable to a computer without human intervention. The technology in itself is quite simple. But it probably takes much more time to create Semantic content rather than the traditional text. We'll see how things evolve.