It's an important point, and it goes to one of the issues we spend a lot of time thinking about, which is user control, and making sure people have the ability to make the choices that are right for them about how their information is used.
We don't give people the choice to accept certain portions of our terms of service but not others, largely because it would be very burdensome for us. It wouldn't be efficient for us to give people those options to negotiate and to provide different versions of Facebook for different people. Given the fact that we're now at a billion users, it would be prohibitively difficult to do something like that. That said, we build robust controls into our product that allow all our users to make decisions on how they would like specific pieces of information used.