India has overtaken the United States as the world's largest Facebook audience, with 241 million active users. As of July 13, Facebook says India surpassed the U.S., which has 240 million active users. New Delhi also ranked sixth among cities with the largest Facebook audience. Active users in India have increased 27 percent in the last six months alone. India's mobile users represent 84 percent of the total 241 million. — THENEXTWEB