As you might know, there are (besides the big players like steam) some open platforms for casual/indie games. One of them is Kongregate
Following the link, you can see that they also offer a html shell to make things easier. You need to embed the game in order to use the shell, of course. Does this work with C2?
In addition, there's the server-side JSON API, used for payment, high scores, badge feeds, etc. Again, how would that be integrated?