Well, here's my dilemma. I am running a roleplaying (post-by-post rp) forum, and I have no idea how to get the word out. Where should I be looking to find a place to advertise? How much should I be looking to spend? I'm obviously looking for free affiliates (we link to them and they link to us - easy), but most of the sites out there are either unknown to me or they aren't willing to log into more than one forum.

Any suggestions?