It's a limitation of the Github API. The app sends notifications after receiving a web hook from Github, and you can only add web hooks for repos you own.

It looks good to me. What are you seeing? What browser?

I don't have any Chrome plans (I work for Mozilla), but I've heard rumors that the Chrome team is working on their own push notifications.

Eventually I want to get these APIs standardized and in other browsers, not just Firefox and Boot to Gecko.

It relies on Mozilla's notifications API, which Chrome does not support (AFAIK).

Thanks Julien!