There is a Facebook group about Ayn Rand with 7000 members. I just got banned (I saw this coming and it wasn't valuable anyway). I was trying to post about how Reason is Urgent; Now or Never, which has four Ayn Rand quotes and discusses Objectivist ideas like how big a problem contradictions are, which the moderator deleted, twice. You can see what happened next in the screenshots below (comments are unmoderated).
Michael Brown is very irrational. It's interesting that he controls what might be the largest Objectivist group in the world. I suspect the way he accomplished it was by filling it up with thousands of non-Objectivists (a little like Wynand's large readership):