So it's the individual themselves who decides when to put the content on and when to take it off. We're very clear, our terms of service again state very clearly you own the content on Facebook. We're just undergoing a transition at the moment to a different way of displaying the content that a user posts to something called Timeline. When we've gone through that transition, any user will be able to see all the content they've ever posted on Facebook and be able with a click to delete it or restrict the audience or change it.
So we, Facebook, don't put the shelf life on, but we give individuals the tools to decide --