I am writing the first IC post as we speak, in case anyone is worried. You are still welcome to establish more relationships if you want to, though. Heck, you can do it after the game begins if you like, as long as you don't contradict anything important.

EDIT: Anyone can respond to my character, ignore him, or advance the story at your leisure. You should also always feel free to write retroactively if you wish, so you don't end up forced to stand around doing nothing while the game moves on.

Oh, and just in case - I've seen a lot of Advanced games peter out and die because everyone is sitting around waiting for inspiration to strike, so they can write a massive, amazing post. It's better you post whatever you've got, and keep the game going.