I find issues and the wiki to be the
weak points of github.
What's wrong with GitHub's wikis?
I recently evaluated wiki software that I could use with one of the teams I'm on, and I was surprised when I ended up choosing GitHub's wikis. I love that their wikis support Org Mode's syntax. The only other solution I could find that supports Git and Org Mode's syntax is Gitit, which was my second choice.
I was fully prepared to use Markdown, Textile, or some other lightweight markup language that I consider inferior to Org Mode's syntax, but no wiki solution was good enough to warrant that compromise.
