"Facebook is using some seriously magical secret sauce to figure out who your friends might be, then what you might like based on your shared demographics, befo

"Facebook is using some seriously magical secret sauce to figure out who your friends might be, then what you might like based on your shared demographics, before asking you anything more than your email, name and age. That's pretty amazing." Did this part bother anyone else as much as it bothered me? If you're not a Facebook user, then you obviously have not agreed to Facebook's terms of use, and have not given Facebook permission to use your info (e.g. email address). I would have figured this would preclude them from keeping your email address when friends hand it over and using it as a key for datamining stuff about you even if you've never signed up for their service.