20 JULY 2011 - It was March 2010. Apple had just announced its iPad tablet. Many analysts were quick to label the announcement a big mistake by the Silicon Valley giant. But more than a year later, it's apparent that they were dead wrong. Apple's iPad has been a huge success, as reflected by the company's recent earnings. And today, Apple's second-in-command Tim Cook said "86 percent of the Fortune 500 companies have begun using the device.