I have heard alot about the use of forts in the game and I have rarely ever used them. I started and new game and spaced my cities rather far apart in a nice line effectively 'chopping' the continent I am on in half. I have ports on each coast. In between I put forts where I have no influence but other than that I can't think what advantage there is to building them. How do you guys use them and why? Thanks much.