When Steve Jobs walked on stage for the announcement of the iPad 2 in San Francisco on March 2, nobody realized that the new iPad 2 would have the impact it has had so far. Over a million have been sold. Disappointed would-be customers waited in long lines at stores across the country and around the world only to discover that there were no more iPad 2 tablets available at that location. It was one of the most remarkable introductions of a device in history.