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Zuckerberg's talks about how Netflix and other services such as Hulu, IMDB, DirectTV, DailyMotion, Ina, FLixster, Blockbuster, Cinemur, Izlesene, Into_Now, and others. It works with social news, so you can see what your friends are reading.
You can share apps with your friends such as this Nike+ record of your daily jog.
Facebook CTO Bret Taylor talks about Open Graph. He shows how people discover new music from their friends. Plus, sharing food they're making leading to someone buying food while at a grocery store.