Findings:

• Mathematical Repository
• Election 2012: An Unofficial Quest Announcement
• Unofficial Military Acronyms (category)
• Metallica Unbound: The Unofficial Biography
• Unofficial North American cigarette color-coding scheme
• The Unofficial Guide to TinySex
• Unofficial Foreign Travel at the NSA
• Burger King anthem (unofficial)
• National Eagle Repository
• Portland Pattern Repository
• The Repository
• Everything AIM Repository (node_forward)
• Debian
• repository
• debian (user)
• debian tart
• lipstick debian
• Configuring Debian for Japanese input
• An idiot's guide to installing Debian Linux
• My 486 almost runs Debian now, but I can't play Doom!
• Progeny Debian Linux
• Debian Free Software Guidelines
• Debian GNU/Linux
• Debian Social Contract

If you Log in you could create a "unofficial Debian repositories" node. If you don't already have an account, you can register here.