Mhh, you can use it with BitBucket code.. but BitBucket provides already a nice UI for the code reviews with Pull Requests (same with GitHub?). What's the point of using CodeBrag, only the "likes"?
But for me, the main advantage is having a clear to-do list, so that I can see at first glance what is still waiting for me.
I think CB can work very well in conjunction with BitBuck or GitHub pull requests.