Comments are the 'social' part that seems easiest to replicate. Or plug in with a 3rd party tool like Disqus (which gives you more social features). But the co

Comments are the 'social' part that seems easiest to replicate. Or plug in with a 3rd party tool like Disqus (which gives you more social features). But the coolest thing about Medium comments is that they can be inserted mid-article, with highlighted text, as annotations. Medium also lets you follow users, and gives you recommendations based on what they recommend. But filtered through an algorithm. Sadly there's no simple reverse-chronological list of recommendations.