FONU2 Inc. announced it has appointed Christian Walker as Chief Technology Officer. An experienced entrepreneur, technology innovator, and veteran of numerous successful Silicon Valley startups, Walker comes most recently from Frog Design where he led development of their white label shared viewing application for connecting television viewers in real time. Prior to coming to FONU2, Mr. Walker was chief architect of MFoundry's mobile development platform, mWorks. Walker also designed and built the transactional engine for online travel site Orbitz, which remains one of the web's busiest transactional sites. Walker most recently won a Webby award for his work on Wired.com's Making the Nebula iPad application.