From the article: "Responsive Web Design isn't a silver bullet for mobile Web experiences.
Not only does client-side adaptation require a careful approach, but it can also be difficult to optimize source order, media, third-party widgets, URL structure, and application design within a RWD solution.
Jason Grigsby has written up many of the reasons RWD doesn't instantly provide a mobile solution especially for images. I've documented (with concrete) examples why we opted for separate mobile and desktop templates in my last startup -a technique that's also employed by many Web companies like Facebook, Twitter, Google, etc. In short, separation tends to give greater ability to optimize specifically for mobile."
Luke Wroblewski provides an insightful review of the status of RWD and of which are the challenges yet to be met by those who have or are planning to use it.
Informative. Resourceful. 8/10