Tribute Post
From A Wiki in the Desert
A Tribute Post allows factions to make a tribute in an attempt to get control of the area.
How to tribute
Clicking on the Tribute Post will present a popup box:
This will indicate what the item to tribute is, and gives an option to make a tribute. The post will tell you how much has been tributed by various factions.
There are building restrictions in place within 64 coords of a Tribute Post.