This functionality was part of Facebook. It did not take a special hack to create this.
Yesterday they all disappeared. Now I am once again at the mercy of the Newsfeed. Yes, I can select "See first" in the follow settings for the pages. I can also turn on notifications so that I am alerted whenever one of these pages puts up a new post. But doing that for every page I follow would make things kind of a mess.
It is disappointing because I am probably going to miss out on some interesting posts, posts I would have seen with my lists.
It is also a reminder that no social media platform belongs to the people who use it. Make sure you maintain a website and blog. You need an online property your followers can count on.
(Hire me to develop your online content. firstname.lastname@example.org)