FranticFish - 2:09 pm on Nov 8, 2010 (gmt 0)
Since the advent of maps one site will have a very tough time ranking for multiple location based searches, and that is an improvement as far as cutting out spam - 'web design + my town' being a notable example. It does also make being a middle man for location based service searches more difficult - perhaps impossible. Google won't lose any sleep about that. However the maps results are by no means harder to spam.