A couple of years ago I used to post fairly regularly on a certain car related forum.
The forum had lots of problems with the forum software, and it went down for an extended period for a refit.
Some (loads) of the members decided to start an alternative forum and invited many users over. So I went.
A few weeks in, a member was asking for help with an IT problem. They had to find a way to keep a Windows 98 install around, and as they were fairly tech-savvy I suggested using VirtualBox.
I made the mistake of remarking that it was ‘free’- it is. But a certain know-it-all forum member decided that I was advocating software piracy- he’d misunderstood that I was referring to Virtualbox, not the ’98 discs.
Well, things took an unexpected twist when he contacted the forum mods/owners and explained how important he was :), and how he could have them shut down at any point for openly advocating piracy. Despite their efforts to show him he’d made a mistake, he continued in this vein for some time- threatening, basically.
A very cursory Google for his username showed him on some cable telly forum a couple of years before, asking where he could buy dodgy boxes and how to break their encryption….needless to say, I passed this info onto the forum mods, who passed it onto him.
He posted a very public apology on the forum very shortly afterwards. Oddly enough, despite massive humiliation, he continued to post incessantly and still does.