TAMPA - A tbt* pop music critic resigned Thursday after acknowledging she had posted negative comments on a Myspace.com profile that parodied Hillsborough County Commissioner Ronda Storms. The messages posted by Gina Vivinetto, a columnist for the free tabloid daily, which is published by the St. Petersburg Times, were "inappropriate," Neil Brown, the Times' executive editor and vice president, said late Thursday. The comments, which Brown declined to describe in detail, were "mocking Ronda Storms in a somewhat sexual nature," he said. The postings by Vivinetto were discovered Wednesday, two days after the fake profile was pulled from Myspace, Brown...