By 2010-09-11T13:25:50Z YEREVAN, Armenia (AP) -- Anyone looking for huge amounts of free chocolate should book a flight to Armenia's capital next month. That's when the world's largest chocolate bar will be up for grabs in Yerevan's main square. The Guinness Book of World Records certified the 9,702-pound (4,410-kilogram) chocolate bar at a ceremony Saturday....