One facet of PotBS that really stands out when compared to the current MMO competition is the economy system. The game very much follows the player-driven sandbox model made popular by EVE Online, where everything is player-made. While you can buy some items off NPCs, they are of inferior quality, and are generally not worth bothering with. Instead of using the character to craft different things while grinding up your "crafting skill", you act as a "business tycoon", and just direct the gathering and manufacturing operations.