Stumbleupon
Spin the wheel, or click the Stumble button, and see what you find on the world wide web. It's not as broad as it sounds, don't worry, you simply choose some interests you are interested in and StumbleUpon will generate a website or photo relative to your interests.
It's very rare, in the month I've been addicted to it, that this website brings forth bad results. This is primarily because StumbleUpon learns your favourite interests, through straight forward 'Thumbs up' and 'Thumbs down' buttons. An effortlessly easy to use website which helps you discover the areas of the internet you're interested in, and didn't know existed.