[Underqualified]

Reddit has grown significantly the last few years, but it still has only about 50-60 million daily users, compared to Facebook's nearly 2 billion daily users.

Don't get me wrong, I like Reddit. Before it I used Usenet, which died and after Usenet I was active on forums (most of those also seem to be gone now). I really prefer those topic based social media to the other user-based social media. But I've seen enough of them die before.