I know it doesn't contribute much to the board, but i was curious. What is the point behind the multiple subdomains (danbooru, hijiribe, etc.)? Are they redirects to different servers in case one goes down, and each of them are flashed with a master image of the latest files on the danbooru server?
Don't get me wrong, I find the concept of how Danbooru's DNS structure works very intriguing, and wanted to know more.