So Facebook has created a platform whose express purpose is to allow people to connect with other people, be that family or friends or organisations of interest to them, and then to share information with that group of connections. So our core raison d'etre is to give people the ability to share personal information with others. But crucial to that is the notion that the individual controls what information they're sharing and who they may share it with, so they control both the content and the audience. So for us, privacy is a notion which is very much at the heart of what we're trying to do, but very much a notion that's allied with that concept of control.
I guess we would contrast it with a notion of secrecy, keeping information entirely to yourself and not sharing it with anyone, where clearly a platform like ours is of no use to somebody who's not interested in sharing information with a group of people. So it's very much about sharing what you wish to share with the group with whom you wish to share it, and that's articulated when you use the service by a set of very clear controls.
If I go on to the Facebook site, I'm offered the ability to share whether it's a photo or a textual comment or a link to something else and right in front of me is a little icon that says, "Do you want to share this with the whole world? Do you want to share it with all of your friends or do you just want to share it perhaps with a subset of them, your family or your closest friends?"