When simple-minded Hollywood hero Forrest Gump ran across the country, he gathered followers faster than he grew facial hair. Steve Vaught--a 350-pound self-described "Forrest Lump" who's walking across the country to shed weight--has the same such following, only his real-life fame has been fueled by the Internet. Tens of thousands of people are regularly checking in on 39-year-old Vaught's progress through his busy Web site, TheFatManWalking.com. Vaught's wife, April, who has been penning his online journal, alludes to a Web audience of about 100,000, and that was before Vaught was featured on the "Today" show earlier this month. Vaught left...