2009 visitor of mini blog service site in Japan is 12.3 million

From the press release of VideoResearchInteractive, 2010/1/27.

http://www.videoi.co.jp/release/20100127.html

Mini blog include following sites such as tumblr, twitter, Twitty, ReTweeter...

First chart shows the number of monthly unique visitor of mini blog website. Scale is one million, 2million, ...

Second chart shows some monthly metrics, such as unique visitor(10 thousand), reach(%), average sessions per month, total pageviews(10 thousand), average pageview per visitor, average time spent per visitor.

Third chart shows age*sex ratio by website user and mini blog site user. The age*sex
category is age4-12, age13-19, men age20-34, men age35-49, men age50-, female age20-34, female age35-49, female age50-.