Back in Ultima Online it was common practice for people to create portals at populated areas with macros advertising their shop on the other side. So one day I was browsing around, seeing what people had to offer, when the portal I stepped through disappeared. I was in a desert with no-one around but another player whose name was in red text, meaning he had killed enough players in cold blood that the game recognised him as a murderer.
It seemed like the advertiser had set up his portal to lure people to a desert to get murdered, and because you could loot players in Ultima Online, reach a tidy profit from their corpses.
