Great! . Have you thought about offering this as a Google apps solution. So that authentication can be restricted to people from my company and app could be accessed at gitbug.mycompany.com
I'll probably get round to opening up the code so people can run their own versions soonish. I want to test out a few things first and clean up the code. If anyone is particularly interested drop me an email at gareth@morethanseven.net
Wanstrath announced and demoed an integrated GitHub tracker a couple weeks ago at a Ruby meetup in SF. Not sure how long until they release it though.