A look at Twitter in Japan, its second-largest market, raking in $136M in Q1 revenue, where the service has mass appeal and many users have multiple accounts (Selina Wang/Bloomberg)

Selina Wang / Bloomberg:
A look at Twitter in Japan, its second-largest market, raking in $136M in Q1 revenue, where the service has mass appeal and many users have multiple accounts  —  Rising ad dollars from Japan has bolstered the company's total revenue  —  When Yu Sasamoto joined Twitter Inc. as head of Japan in 2014 …