Our company, GaiaX (http://app-support.en.gaiax.com/) offer user management service for mobile game publisher and developers and I am in charged of international sales and marketing. Our HQ located in Tokyo, Japan and they sent me San Francisco to see the market opportunity in U.S I also one of the writer of our blog so please check this out and let me know your kind feedback! http://app-support.en.gaiax.com/blog/