As others have noted a major vassals of a building is constantly monitored and the rises in rank.
The great now the other player is your vassal of so-called riftsteine can hire and can experience their own quests with him.
The vassal "learns" this from the experienced quests as localities of certain objects and also how certain monsters killed (weaken the Lizards for bsp.eis) and gives you these things known during your quest.
so ensteht a very clever connection between all online players without which one really ever encountered.
If you send back the vassal can give him gifts and post reviews with pre comments.
Truly a successful piece of software at the time flies by.
I highly recommend it !!