The Tabernacle is gonna be bumpin on August 29th!? That’s the date that Nelly is performing for $$”FREE-99″ in Atlanta.? Nelly, along with Nas and Mariah Carey have been slated to perform as part of the second annual Samsung AT&T Summer Krush, a free summer concert series designed to highlight Samsung’s BlackJack II mobile phone.? Nas is scheduled to perform at Webster Hall in New York on Aug. 27 and Mariah kicks off the series?July 31st in Los Angeles.? A limited number of free tickets will be available through radio promotions, artist fan clubs, street teams and online registration at www.samsungsummerkrush.com.??