Easter egg hunt: Seven secrets of the world wide web

They're known as "Easter eggs" - and the web has them in abundance, BBC News reports. Andy Clarke, who owns Wales-based web design studio Stuff & Nonsense, has his own simple definition: "It's something unexpected that makes you smile." "It's fun to slip these things in and wonder if people will notice them, and how long it will take," he tells the BBC, remembering one of his own eggs, in which users could shoot a beloved mascot on a local council's website. They never found out. So here, in no particular order, are some of the best website-based Easter eggs the BBC has found out there. There are no doubt thousands more. You can tweet your favourites to us on @BBCTech. Please note - all of these worked at the time of publication, but developers have a tendency to remove Easter eggs when updating websites and software. Don't write in. It's a combination of actions that is etched into the brains of gamers everywhere - the Konami code. Up up, down down, left, right, left, right, b, a. Used to unlock cheats on many classic games made by Konami - and others that aren't - the cheat code is also now used as a common way to enable Easter eggs. Using your keyboard's arrow keys, tap in the sequence on Digg.com for a musical treat. Or, even better, give it a go on both Vogue.com and GQ.com to meet the internet's most fashionable dinosaurs. If you're feeling especially brave - try it on Buzzfeed.com for a terrifying glimpse of what entertainment news may become if the world doesn't stage some kind of intervention. Read more here