Gwen's post has really affected my writing of the past four days.
I'm doing a personalized story for someone on www.rapedungeon.com, and as I was going over the issue, it occured to me that if I didn't watch out, I'd be guilty of an easy-to-read mess of "what can we do the sub now?"
The more though I give to whom the sub is, and her experience in the story, the better I can paint a detailed and exciting portrait of the character, and the scene.