The information on that site is a bit misleading. How would they figure out your name? Or who your friends were? They would have to already know your name to s

The information on that site is a bit misleading. How would they figure out your name? Or who your friends were? They would have to already know your name to search for URLs then that would contain your name. That is a lot of work to be doing in a browser. And if you have a common name, then whoptido. So what? You can only use this technique against a set of URLs, you can't determine URLs unless you already know what to check against. At that, you would have to know the exact URL to check against.