Ordinary people and small businesses using Facebook are going to have to come to grips with two new terms after the big announcements Mark Zuckerberg made today at f8 , the Facebook Developer conference. The first is "self-expression," which means your friends will know a lot more about what you read, what music you listen to, and even what you cook. The second is "serendipity," which means if you see a friend of yours has watched a movie on Netflix, you can click on that app in your timeline and begin watching it immediately from within the app.
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