I remember setting up a rune collection in my house/shop (you could set up NPC vendors to sell stuff to other players). The collection was free to use but my vendors sold copies of it you could take away or (for much less) runes that would bring you back to my shop. This meant that people would use my shop as a transport hub, and buy stuff while they were at it.

Such a harsh game, but that's what made it exciting. Interactions felt real, and just like in real life while people could be dicks most people chose to be decent.