Apple really is amazing. We keep thinking they are going to go after the usual suspects like Google, Microsoft, and RIM. Now they are aiming their guns at Facebook. Mark Zuckerberg must not be happy.
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That aside, I'm looking forward to see how this work out. Given that a lot of people could mistake RWW for Facebook login[1], maybe being stuck inside iTunes could be an advantage. In a sense of "Open iTunes, click this, here's your profile!"
[1]: http://www.readwriteweb.com/archives/facebook_wants_to_be_yo...