Pittsburgh--Jennifer Alexander, senior VP at Young & Rubicam, New York, Friday became the latest advertising industry executive to join a .com. Storm, Pittsburgh, announced that Ms. Alexander has been named VP of marketing at the Internet start-up. Ms. Alexander will lead national advertising and branding initiatives for Storm, which specializes in desktop applications designed to make corporate Web sites and intranets run faster. At Y&R, Ms. Alexander was credited with planning the strategy and development of Citibank's latest Internet products. With Ms. Alexander's appointment, Storm said it plans to become more aggressive in its strategy to gain market share in the Web performance market.