QComicBook website is going to be down as I decided not to renew my existing web hosting, due to costs (the donations I received would cover only a fraction of hosting cost). QComicBook will still be available via GitHub repository. I'll also work on migrating qcomicbook website to GitHub webpages (with limitations, as they are not hosting Rails webapps), which will hopefully mean it's going to be available via http://www.qcomicbook.org again soon.
And no, QComicBook is NOT dead. It may look like it is since it hasn't been updated for a very long time, but I promise, I'm not giving up on it! Stay tuned!