May 2 2011: I really don't know what all the fuss is about. This app does not work anyway. It requires WiFi which is not mentioned on the Apple website and if you do find WiFi it simply does not work. For your 5 bucks you get a 3 minute speech from Al Gore and a pretty spinning picture of the world.
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A comment on Conversation: LIVE CHAT with Mike Matas: Monday, May 2nd, 1PM-2:30PM EST *UPDATE: Extended through May 6th*
DO NOT BUY THIS APP!