On November 13, 1990, one day after Tim Berners-Lee's and Robert Cailliau's publication of the concept of a world wide hypertext system [2], the first web page was published. Today, living without the World Wide Web, or simply the Web, has become almost impossible. Our daily live depends on news spread over the web and ecommerce hase become a convenient commodity. Nobody wants to live without it. Incredible, but only 20 years ago, most people lived in the stoneage compared to today's virtual online worlds.