I have created a flash-based MMORPG that combines aspects of Pokemon and Paper Mario. Right now, it is in an open debugging phase, but I have no users debugging it. Where should I market / advertise to fix that? By the way, my website is at this link, and a forum account is required to play. The game is partially, but not fully complete.
You could try posting some videos on YouTube and MetaCafe as well as Google Adwords if you don't mind putting a little money into it.
Try Youtube or social networking site like Facebook and Twitter.... But you can gain positive outcome if you go to groups that has same interest as yours
MMORPG.com Onrpg.com I believe you are able to send a link to the site to have them put a game profile for you up. You can also have advertising on them, but that is going to cost you $$.