I think most of those are just me, hitting refresh endlessly to see what glorious new avatar you'll choose next.
Honestly though, I believe the high count is an aspect of the billions of bots out there. Nearly half of all internet traffic is generated by bots, with bad bots accounting for about one-third of that traffic. This trend has been increasing, with bad bot traffic rising significantly in recent years. In 10 years if we don't find a way to halt the nefarious bots, probably most of the online folks out interacting with each other will be bots.
We absolutely see bot traffic here. It started with accounts signing up, changing their avatar, then trying to start a post full of russian text, or links to free viagra, or what have you. The mods catch all those. But now I'm guessing half or more of our new people showing up and posting on existing threads, sometimes years old threads, with relevant things to say, are bots. The technology is certainly there, and it's not like thirdhour has two factor cell phone authentication. All you need is a fake Google/Facebook/X account or valid email address, and the ability to find the "I agree to the terms" button.
So yeah, don't buy viagra from anyone who contacts you via the thirdhour PM function.