NHN Corp. on Tuesday reported its second-quarter net profit of 4.6 billion won (US$3.4 million), down 70 percent from a year earlier.Operating income for the April-June period was 28.5 billion won, up 36.3 percent from a year ago, the company said in a regulatory filing. Sales rose 8.7 percent to 599.4 billion won.(END)Source: Yonhap News Agency