Yahoo! Music - WQHT's annual Summer Jam has become one of the biggest hip-hop concerts of the year. This year's event--held Sunday (June 5) at New Jersey's Giant Stadium--brought out the biggest stars in hip-hop and served as a platform for rappers to air their beefs, as it has in past years. In 2001, Jay-Z used the Summer Jam stage to call out Nas and Mobb Deep; this year The Game used the stage to air out former mentor 50 Cent.{br}{br}View the Entire Article{br}