If you're trying to add your map to the Map Factory subforum, but can't, that is because you need to upload your map in the "download" section. You can do this by clicking "downloads" at the top of the website, and then clicking the blue "Add Download" button on the upper right. When you do that, a thread will be automatically created for your map! Yay!
Our servers are now running a Steam Workshop rotation, if you'd like your map to be considered for inclusion on our rotation, post in the rotation discussion thread
Or, if you just want to play some of the best community maps the Workshop has to offer, you can join our servers by clicking these links:
All maps that are still under development.