While introducing himself to a packed hall of iPhone developers and entrepreneurs last week, Raven Zachary briefly mentioned one piece of bad news; an upcoming developer event he was supposed to co-chair later this month, had been canceled.

Zachary moderated a session on "The iPhone Market Opportunity" at O'Reilly's Web 2.0 Summit and was set to co-chair O'Reilly's iPhoneLive Conference, but it was quietly cancelled last month.

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