Instead of simply USING an existing app framework like Backbone, Durandal, express, etc, this is a meetup group for people interested in MAKING application frameworks.
So if you're developing a new application framework of your own then this is the place to come discuss it, present it, and generally ideate on it with other people genuinely interested in application architecture.
We discuss, collaborate on, and generally thrash about frameworks both our own as well as the popular ones out there in the open. And we intend to open up the members to each other's styles and strengths and come out with multiple frameworks implemented in open collaboration.
See you here some time with your thinking hat on :)