One angle is that your friends are posting all the best videos online, and you need only check Facebook to find something to watch. The other angle posits that algorithms are the key — formulas that comb the web automatically to find videos you might like based on other videos youve already liked (think Netflix). N3twork is the latest, an iPhone app created by Neil Young, one of the most successful mobile game-makers in history. The app ignores all the videos your friends are posting on Facebook and Twitter, and instead focuses on learning more about what you like.