Heads up! This blog post hasn't been updated in over 2 years. CodePen is an ever changing place, so if this post references features, you're probably better off checking the docs. Get in touch with support if you have further questions.
It's been a long time coming, but we're finally getting our social media act together! You can now find CodePen on:
Facebook: https://www.facebook.com/CodePen (yes, it's really us now!)