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"Everyone is so excited about tethering the iPad 2 to a projector, admittedly very cool, that we have missed something else at least as good if not even better! Go all the way: make the iPad 1 or 2 into a complete interactive whiteboard solution! If you already own an iPad, computer, and projector, this can be done for less than the cost of Apple's new Digital AV Adapter for the iPad 2. Ok, full disclosure: this solution only costs 2 cents less than the adapter. But for tethering with the Digital AV Adapter, you also have to purchase an HDMI to VGA cable too!"

Tim Berners-Lee has dubbed Facebook a threat to the universality of the world wide web. Next month marks the twentieth anniversary of the first webpage - served up by Berners-Lee at the CERN particle physics lab in Geneva - and in the December issue of Scientific American, he celebrates the uniquely democratic nature of his creation, before warning against the forces that could eventually bring it down. "Several threats to the Web's universality have arisen recently,"