A few years ago, my son introduced me to one of his favorite websites -- www.stumbleupon.com. The basic idea, he explained to me, is that you click on a number of categories of things you find interesting, from movies to world politics to games to oceanography. You then "stumble" onto a website chosen at random by the website's decision engine, and after viewing the page you click "I like it," "I don't like it," or you can express your indifference by not clicking anything.
The decision engine takes these refinements into account, and you are gradually channeled towards more and more sites that you enjoy and away from those that hold no interest for you. The more you stumble, the more accurate and enjoyable the websites you will stumble upon.