If you want your application to hit the big time, it's a great idea to allow users to register using third-party credentials. Websites all over the internet allow you to log in using Facebook, Twitter, or accounts from other services. Doing so removes hurdles to prospective users signing up for your service. Passport makes it extremely easy to do this.
Supporting Twitter requires installing TwitterStrategy, registering a new application with Twitter, and adding a couple of routes into routes/user.mjs and a small change in partials/header.hbs. Integrating other third-party services requires similar steps.
