The missing RSS feed for GitHub Issues v2.
This was made to be deployed to Heroku. I've gone ahead and deployed one installation already. To use that version, just provide a user/repository combo to http://issues-rss.heroku.com (e.g., http://issues-rss.heroku.com/rails/rails)
Download the repository. Create a heroku application (I used 1.9.2, I didn't bother to check if it will run on 1.8):
heroku create my-rss-app --stack bamboo-mri-1.9.2 git push heroku master
Copyright (c) 2011 Robert Speicher. No license; do whatever you want with this.