It just occurred to me that GitHub Gist can be great for blogging. They keep a revision history, which encourages you to make make updates to a post while making those changes transparent to your readers. They also support Markdown, making it easy to read and write them. And finally, there is commenting system is exclusive to GitHub users, which I hope can be a good filter for constructive comments.
What do you think - does a blogging solution built on top of GitHub Gist sound interesting to you?