With the launch of a revamped 4.0 version of its flagship app, WebMD has begun to execute on a strategy that Bill Pence, the company's EVP and CTO, laid out for MobiHealthNews earlier this year. Based on my March discussion with Pence and a recent interview with Todd Zander, WebMD's VP of Mobile and Emerging Media, the longterm vision for WebMD is to create an app and web experience that includes...