Yoshikazu Tanaka is Founder and Chief Executive Officer of GREE, a social networking service with 230 million users globally. In June 2010, five years after it was founded, GREE was listed on the first section of the Tokyo Stock Exchange. Tanaka previously worked at So-net Entertainment Corporation and at Rakuten, where he started developing GREE in his spare time. He earned a Bachelor's degree in Law from Nihon University in Japan in 1999.