My definitions of casual and serious are pretty simple, really. When played casual, the RP is usually kind of fast-paced, each person posting 1 or 2 lines, the story line is generally vague and open for any to join in at any time. A serious RP would be more concrete, with an established story line, each person posting several sentences - paragraphs, and being very involved and dedicated, although the RP would move along a bit slower. I understand the reasoning behind keeping it to one forum, it was just a matter of organization, and maybe making it a little easier for serious RPers to find a stable place to settle in at. Although I agree with you about the multiple threads for each RP, I was wondering if it would be acceptable to have an OOC (out of character) thread to accompany the more serious RP's? It makes it easier to clarify the storyline and character's places if there is any confusion or miscommunication in the actual RP, and allows the gamemaster to inform players about the world and background and whatnot in more depth.