I’m using it for learning purposes. With it I’ve been able to understand the basic concepts for Cocos2d-x which I’m planning on using in the future. Of course, I’m using it for a very basic game that doesn’t require more than a collision detection and a couple of assets.
I think bigger projects need better support, community and documentation but because CC is starting to grow, it’s going to be a path molded by the interaction between users and CC’s developers.
As others have pointed out, it’s a great tool for making prototypes really fast. I’m yet to test the actual compilation process, but I’ve had a great experience with it so far.