Found this through TechCrunch. SEO jobs with robots.txt This newspaper used robots.txt to advertise an open position for SEO techies. I love the idea. They still have the posting but I think it's a great way to find good candidates.
I think this workd only for SEO specialists. If you have any other position nobody will find it. Also any agencies who have good candidates will not use this nethod. But it's worth think about.