Today, everyone's talking about iPods, and not just as stated-of-the-art musical devices. When people talk about their iPods, you might think they're talking about a best friend: "I'd never go anywhere without it! ' 'If I had to choose between my iPod and my girlfriend, well. .. ' Despite the number of me-too products designed to complete with the iPods, the original still has the largest market share. Why? Brand loyalty.