What things should I look for to try to become more or less worried with this problem?
One cool thing is that I first saw the house about 5 months ago, so if this is a fast moving thing, I'll be able to tell, but I'm betting it's not. The big question is this 13 years of ground movement or 5?
So if anyone has any advice, I'd love to hear it, or if anyone is bored enough to come along and take a look and be a sounding board... unlikely, I know.