Social networking site Twitter grew its unique audience in Japan by a whopping 428 percent in the 12 months ending September 2010, and will likely end the year as the most popular social networking site in the country, according to data from comScore.
The site attracted 13.2 million unique users in September, closely following rival site Mixi.jp which saw 13.5 million visitors but has seen its growth plateau since March. Given its strong growth, it appears Twitter will therefore overtake Mixi by December at the latest.
Despite its dominance in the social networking space in the U.S. and the U.K., Facebook continues to attract a fraction of the Japanese audience achieved by Mixi and Twitter. It has enjoyed growth, though, increasing its user base by 78 percent during the year ending September, reaching 5.3 million unique visitors, comScore said.

Introducing SES Online
Want to view one of the sessions you missed or listen to an especially informative presenter a second time? SES New York sessions are available for purchase on ClickZ Academy's new e-Learning site. SES is now Online!
Jack Marshall was a staff writer and stats editor for ClickZ News from 2007 until August 2011.
May 29-30, 2013
June 12-14, 2013
September 10-14, 2013
September 16-18, 2013
November 4-7, 2013
May 22, 2013
1:00pm ET / 10:00am PT
June 5, 2013
1:00pm ET / 10:00am PT