Hi Nickadimos. You can actually upload your maps to the site rather than linking. This comes with the added benefit of producing a clickable thumbnail (you may have noticed I have edited your original post in this way). It's helpful for all as people reading the thread don't have to wait for large images to load.
To upload an image to the site, click on 'go advanced' below the message box, and 'add attachments'. Browse to the attachment on your pc and upload. That will automatically produce a clickable thumbnail. Why don't you try it with your map in the previous post by clicking the 'edit' button.
Nice map by the way! My only comment is that you might want to give the forest a different texture. At the moment the texture looks like it's the same as the mountains except in green.
best
Ravs