If you come across a piece on Medium you can't read without an account, don't be surprised. Medium has expanded its Partner Program to give users a way to earn money from their articles by publishing behind a paywall. The company has been testing the feature since March, but it has just sent out its first batch of invitations to a small group of writers and publishers who can now take advantage of the option. Every time they push a post a live, they can choose to make it visible to everyone or make it exclusive to the platform's subscribers. Even if you're not a subscriber, you'll still be able to read up to three free articles every month that are behind the paywall.