The Next Software Revolution
blog.retromocha.com
blog.retromocha.com
Right now, with the advent of a bunch of mobile device app stores we are near (I think) the height of the swing towards client side. Soon the pendulum will begin swinging back the other way. In the meantime, you need to make your data as accessible as possible, which will pay dividends in the long run, so don't sweat the pendulum.
When people start by building their API's instead of starting with a web app, then the revolution will have arrived. Also, the tooling hasn't matured around building web service frameworks the way it has around MVC frameworks the last decade.