The Game Developers Conference was held last March in San Francisco. I went with a mission: to sniff out some stock tips. I dug up only two things seemed hot: Head Mounted Displays and Mobile Ad Networks. For Head Mounted Displays (HMDs) the big player was a startup called Oculus VR, although Sony was also also demonstrating an HMD in their booth. Of course Sony also makes computers, phones, tablets, speakers, stereos, TVs, cameras, can openers and major motion pictures, so I didn’t feel th...