Let's get this out of the way right up front: the estimated number of iPads sold in the first 72 hours is nowhere near official. And if the numbers hadn't been scraped together by a well known amateur Apple analyst who regularly trumps the pros then we'd be skipping the fruits of his black magic algorithms altogether. Nevertheless, Daniel Tello (aka, Deagol), has applied his proven approach of extrapolating Apple web order numbers to come up with a 120,000 total for first day iPad sales that slowed to 152,000 after 72 hours (not including iPads reserved for pick-up). Tello told Fortune, "My best guess, although very tentative given the early stage and few data we have so far, would be that they hit the 1 million unit milestone by the second week after it ships." For those keeping track, it took the original iPhone 74 days to hit 1 million. Quite an accomplishment if these numbers pan out (and that's a big if!) considering that only 3 to 4 million tablets are sold globally each year.