As some users have noticed, the HFU has recently become popular with lots of Web crawling bots, leading to inflated view counts for many threads.
According to the client info from the web server logs, these bots appear to be from the Mastodon social media site. Unfortunately they come in waves, and sometimes there are dozens, perhaps even hundreds, viewing the same topics at the same time. I assume their intent is not malicious, we're just the victims of sloppy programming.
Also unfortunate, they apparently don't obey robots.txt files. I'm working on a solution to mitigate their damage.