When it comes to interacting with a website, they always seem to want to know if you're a human. Sure, my cat has managed to get to a surprising number of sites on her own, but websites aren't really worried about cats. Rather, they want to keep bots from getting in and mucking things up. That's why most sites employ some sort of CAPTCHA system that most computers can't crack easily. Unfortunately, some of the best ones have now been cracked.