Some technical details about this weekend project:
-It is based on the firebase api(https://hacker-news.firebaseio.com/)
-Frontend is Angularjs
-uses social login from firebase, so you can save your favorites
-has a thin nodejs layer
-hosed on heroku and using cloudflare for cdn caching
-see the code on https://github.com/valentinvieriu/visual-hacker-news
Please consider this is as a weekend project