Thanks for such a quick response! 

That seems pretty simple! From what I gather; Free is for posts about the length of my example, Casual is a paragraph to three, and Adv. is for five or more paragraphs? I looked at a couple in the free section and it seems everyone's length varies, or do I have it wrong and Free literally means "write however long you want, brah."? 

I'm also concerned about the times people post. Do most games have a turn order or is it more of a free for all when it comes to posting? Or is that something that varies GM to GM?