Few devices this year have made the kind of splash that the Apple iPad has. In five months it sold 7.5 million units with projections saying over 10 million by end of 2010. Not bad for a device criticized for being too expensive, too heavy and not useful enough. It’s meant to accompany your desktop, laptop, for reading the news or watching YouTube. Starting at $499, it’s quite an expensive toy but at the same time, there are few people out there who would say “Bah, humbug!” if they were given one for Christmas.