Right, you could've said that in the first place.

That does leave the RPGs still a bit grey, though. Just making a character for the RPG apparently isn't enough for a "collaboration". Now, I did do something else in a branch of this RPG that was created by a friend. He asked me to create and take responsibility over a part of it, and I worked with him to figure out how it should be done and did it. Does that make it a collaboration of some sort? And, if it does, does it only apply to that branch of the RPG or the others as well (which are essentially the same universe)? Or maybe it only applies to that particular part that I created? ...Which would get really confusing...

Now, there's even a more tricky thing. Aren't I just awesome? XD
I and [netpoet22] created this idea of the PlanetSide project (39.PlanetSide: Tzhagane). Basically only I and Matt are the original creators of the thing, but many others have also written stories based on these ideas and we've allowed them to be posted and stuff with our permission.
Wait, maybe it wasn't so tricky. Krhm. >_> So, according to your rule only my and Matt's PlanetSide stories would be acceptable here, right?