[liftbigweights]

Here you go. Reddit was always bigger than snapchat. They are about the same size as twitter.

https://www.statista.com/statistics/272014/global-social-net...

Note that FB owns 4 out of the top 6 social media platforms on that list. That's how dominant FB really is.

[Hypx]

Depending on the definition of "active user." In particular, Facebook can be filled with your once-a-month users, who are basically non-active users.