On October 9, Microsoft posted a testimonial on its Web site called "Confessions of a Mac to PC Convert." It was a first-person account by a "freelance writer" about how she had fallen in love with Windows XP. "I was up and running in less than one day, Girl Scout's honor," said the attractive, woman in the photo. "There was only one problem: She doesn't exist," writes David Pogue. "A with-it member of Slashdot.org, the popular hangout for articulate nerds, happened to notice that the woman's picture actually came from GettyImages.com, a stock-photo agency.