This is a really tough one. Google are already taking serious heat over privacy and other concerns because of the amount of data they hold on users. Facebook wi

This is a really tough one. Google are already taking serious heat over privacy and other concerns because of the amount of data they hold on users. Facebook will face the same challenges unless they allow users ways to opt-out, even if that means deleting your whole profile. It's once they start actually selling the data though, that's when we need to really worry.