[jamessb]

The idea of a wiki using a Git back-end is certainly not novel:

Gollum: https://github.com/gollum/gollum

Gitit: http://hackage.haskell.org/package/gitit-0.1.1

Git-wiki: https://github.com/sr/git-wiki

WiGit: http://el-tramo.be/wigit/

etc.