Of more than 100 broadcast TV show websites, CBS's Big Brother was by far the most-visited site, attracting 29.84 percent of the traffic last week, according to a study by Experian's Hitwise online tracking company. Nearing its season finale, America's Got Talent placed second with 12.63 percent. Third was Fox's So You Think You Can Dance with 8.83 percent. All other TV shows attracted less than 5 percent of web traffic, including The Simpsons, which attracted the most traffic last month while The Simpsons Movie was being heavily promoted, but accounted for only 2.11 percent last week (but nevertheless placing eighth on the list).