To most people, a website that lets you click on a link and then tells you that you need to subscribe to a pay service in order to access the link on which you just clicked would be using a paywall. Most people are apparently wrong. Thanks for clearing that up, Slate!
Facebook might try to manipulate your emotions, but because you are their product they will definitely not put you behind a paywall! “Like” Memoirs of a SLACer on Facebook to receive updates and links via your news feed.