gnoitall sums up the issue pretty well. When we first adopted the rule about insulting other users in thread titles, the Troll thread was a bit of a difficulty, because there really wasn’t a way to rename it so linking from it didn’t accidentally break the rule against insults in non-Pit forums, while still making it clear what the thread was actually about. The workaround (that was arrived at largely by the participants of the Troll thread, and not the mod staff) was to not post any live links to other (non-Pit) threads. Best practice is either state the name and forum of the thread, or put some spaces in the link so that Discourse can’t parse it correctly.