Twitter is trending down, Gab is trending up.
Postscript: I have to confess, I haven’t really used Gab. It does not seem to be taking the world by storm.
Update: In the Summer of ’18 it seems that the overhyped and overblown social media empires are beginning to topple. (Facebook lost over 120 billion yesterday!) We shall see.
If so GAB had better get it’s act together, so far it’s not having any impact. (ps. I did get a GAB account, but it’s rarely used.)