Web applications are all the rage. Web applications that function within the context of social networking sites doubly so. I think it is safe to say that pretty much anyone looking to garner a large audience on the web, for financial or any other reasons, has to be considering how they can reach people on sites like Facebook, or all those users out there accessing the web via their iPhones. Sun Microsystems has entered this arena by providing a set of web based development tools and a platform on which to host the resulting products that is now in beta and named Zembly. And while Zembly has not been open to the public for all that long, two of Zemblys architects with the help of two writers have published a new cookbook for the aspiring Zembly developer, Assemble the Social Web with Zembly.