Arielle Zuckerberg, Mark Zuckerberg's Sister, On Facebook Changes

Arielle Zuckerberg, Mark Zuckerberg's Sister, On Facebook Changes
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As we prepare for F8 tomorrow, all eyes are on Facebook. Recent changes have included a new subscribe/unsubscribe model, similar to Twitter, smarter friend lists, new status updates and Google+ style photos. Also, where's the poke button?