In a statement, Google said it was pleased to welcome TNC's engineers to its team in a deal that would "enhance our online publishing tools in Korea."
Google already owns a blogging software service, called Blogger. But it's a minor player in the Korean market, where blogging is a popular pastime.
Google has tried to expand its reach into new markets through acquisitions before. In July, the company purchased Russian online advertising company ZAO Begun for $140 million.