Remember the good 'ol days (specifically, this past February) when the first Motorola LapDock cost as much as $500 up front and nearly got laughed out of AT&T stores? The sleek Webtop accessory compatible with the Motorola Atrix 4G -- and no other device whatsoever -- has come down a long way, as it's now available for a mere $50 (not counting the more expensive 4GB data plan AT&T requires you to be on when using it, of course). Indeed, it appears that a whole zero has been shaved of