I'll tell you how I came to see it.
Today, the number of users on Mastodon seemed to double overnight.
This seemed weird, so I checked the lists. There were two huge megainstances overnight: gab.com and exited.eu
Clearly they're faking their numbers, but why did they both fake their numbers simultaneously?
Seems like a huge coincidence, no?
Were they trying to promote themselves by faking their way to the top? Simultaneously?
Have a look at
https://the-federation.info/mastodon