By Deborah Feyerick NEW YORK (CNN) — A police officer accused of a cannibalism plot spent hours online with a man who was kicked off a fetish website because his fantasies were too dark and real, testimony Wednesday revealed. On the third day of Gilberto Valle’s federal trial, prosecutors introduced e-mails and chats between Valle and a 35-year-old Pakistani man who re-registered on the website under the name “Throat Slitter.” Valle, 28, is charged with conspiracy to kidnap a woman.