Wild, anonymous, male sex romps took place frequently in the sixth-floor men's room at the Center City Strawbridge's store, police said. Police arrested five men yesterday, and another half dozen last month, in the bathroom, which is listed as a primo sex spot on a graphic Web site catering to gay men. The men's room also was featured in Philadelphia magazine last month as "one of the classiest spots in town to find love with a perfect stranger." All face charges of prostitution or lewd behavior, said Lt. Charles Green. None was a Strawbridge's employees. Strawbridge officials were not available...