People are pretty fired up to play fantasy sports. Last year, participants spent a cool $1.7 billion for the privilege. And now, there are a lot of businesses that are emerging at the edge of this somewhat bizarre ecosystem. There are insurance companies that will cover you in case one of your key players suffers an injury. And there are judges that can be hired to resolve disputes between participants. Now you just need private investigators to help you figure out where your friends and family went while you were focused on football.