Quote Originally Posted by Umarth View Post
Keep in mind though that you can designate, to some degree, what is and isn't OGL stuff in your material.
This is a critical point -- anything derived from OGL material must itself by OGL, but anything that is entirely your own creation can be published without being OGL, and therefore you retain all copyrights and ability to license the materials.

If I'm posting here on the boards, assume it's all OGL, but if I write a 300+ page campaign setting, only those things directly taken from or derived from existing OGL material has to be OGL; I would likely choose to put any new classes, feats, etc., under the OGL as well. But the details of the setting, etc., would probably be kept under a different license.