comScore released its first report on Japan’s top Internet properties and top gaining properties for June. The study was based on data collected through the comScore World Metrix audience ratings service and took into account all unique visitors age 15 and over, who accessed the Internet from a home or work computer. ComScore found there were a total of 53.7 million unique visitors online in Japan in June, or 49 percent of the country’s population, age 15 or older; Yahoo! was the most popular property, with 41.5 million unique visitors. Yahoo! now reaches 77 percent of the total Japanese online population, and averaged 33 visits per visitor in June and the average Japanese Internet user spends 15 days per month online.
http://www.comscore.com/press/release.asp?press=1561