This is a demo node.js application illustrating various features used in everyday web development, with a fine touch of best practices. The demo app is a blog application where users (signing up using facebook, twitter, github and simple registrations) can create an article, delete an article and add comments on the article. and replace the values there. In production env, it is not safe to keep the ids and secrets in a file, so you need to set it up via commandline. If you are using heroku checkout how environment variables are set here.