Beliefrevision.org. The site's front page says it all:
Intelligent agents, like robots and infobots, have to manage beliefs about the world in order to achieve their design goals.
We all know that beliefs can sometimes be wrong, so intelligent agents need to be able to revise beliefs when they acquire new information that contradicts their old beliefs.
Belief Revision capabilities are crucially important for sound decision making and effective communication. In fact, belief revision is fundamental to an intelligent agent's being!
