gistblog is a simple node.js app (easily hosted on Heroku) that uses Github for user authentication and Gists for the backing store of post data. gistblog presents a simple interface to quickly compose markdown-based posts and display them to readers. The author may publish posts as public, private, or limit viewing of posts to specific Github usernames (useful for a private post among a group of people or peer reviews of drafts before making a post public).