Ten years ago, 26-year-old Barry Jones wasn't such a fanatic. Back then, programmers wouldn't be caught dead using a Mac. It was a "PC or bust" mentality. Jones, a Web architect, has worked and played PC for life, but he bought his first Mac in May. It's a love story not easily chronicled, but let's put it this way: Jones went from being a PC powerhouse to a Mac advocate in three months flat, and he'll do his best to make you one, too. "I understand why people call people Mac zealots now," he says. Apple's ad campaigns today (you...