Interested in learning about the latest advancements in Android, App Engine, Chrome, Google Web Toolkit, OpenSocial, and more? Register to attend Google I/O, May 27-28 at Moscone West in San Francisco. This post is part of the Who's @ Google I/O, a series of blog posts that give a closer look at developers who'll be speaking or demoing at Google I/O. Today's post is a guest post written by Paul Do