Over the last couple of years, we've noticed that our customers have gotten more demanding when it comes to the usability of their web applications. Inspired by the "web 2.0" trend and applications such as Gmail and the like, we've tried many approaches to building these rich Internet applications (RIAs). But all of these had one big flaw: they required us to learn a different language, including adhering to a whole new set of conventions and best practices. Only with the introduction of Google Web Toolkit (GWT) have we begun to feel confident about building this kind of application in a...