Groupon Japan, a subsidiary of the international leading flash coupon service Groupon, announced their new alliance with Japan’s No.2 cellphone carrier KDDI on 14th. According to the KDDI’s release [J], KDDI will open “au one coupon”, coupon-only portal site under its official cellphone portal site “au one”, which is available on all KDDI au feature… Continue reading Groupon Japan To Land KDDI Cellphone Official Portal