Most of Apple's customers have never touched a Mac. By the numbers, Apple has reached far more people with the iPod and iPhone. Yet Steve Jobs's sole venture onto the Web, .Mac, is designed to work with Mac hardware. That could change, now that it's registered the domain Me.com. In 2005, Apple patented a service called "Mobile Me," and last week a programmer noticed it was already using that name in new iPhone software. When the new iPhone is announced — as soon as this week, according to rumors — we may see it linked up not with .Mac, a name meaningless to most iPhone buyers, but with Me.com instead.