A post is a basically a pole holding messages from different people (bandits, adventurers, wounded man, nobleman etc.), By taking a message from a post, you can get involved in mini quest ranging from informing peasants about passing tax seasons or simply finding a lost ring. Reading a message from a post can give various effects from having encounter with bandits (damn brigands!), +1hp (hearing joke), +1xp (adventurer advice), getting a poem to cure fear or curse (artful poem). For now, the post only gives one message per quest as if you try to take another message, it would simply say "Nothing new has been posted, please try again later".