http://techcrunch.com/2010/11/15/facebook-email/
Here at the Facebook Event at Yerba Buena Terrace, Mark Zuckerberg is about to take the stage to talk presumably Facebook's new mail client, Project Titan. From what we hear this isn't just an outgrowth of Facebook's text messaging feature, this will be a full on web client like Gmail, except leveraging your social graph.
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