WASHINGTON, DC—In an effort to weed out pedophiles, two FBI agents, identified only as "Cutiepie1994" and "KoalaLover," unknowingly communicated with one another in the under-12 chat room of TweenTalk.com for almost two hours Tuesday. "You should see me in my new bathing suit. It's really rad," Cutiepie wrote. "Kewl. Guess what? My parents aren't home right now," KoalaLover responded. Two minutes after their lengthy Internet conversation ended, KoalaLover unknowingly passed Cutiepie on the way into the bathroom.