One of the things that's happening on mobile is that there's an increased focus for apps to do one
thing really well. So on desktop, a lot of the things that might have fit well into a single Facebook
website, now in order to best serve people, you need to build multiple standalone different apps. So we are seeing that with Facebook and Messenger, and the work that we did to kind of split out Messenger from the Facebook app to give a dedicated experience around that, that we think is a better experience. And we're going to do more of that in the future, as well with the Facebook Creative Labs products that we are releasing.