No specifics but I found a website tonight about "<city>, <state>". It was the top of the serps for "<city>, <state>"
It had adsense and I was amazed that people from this small city had adword accounts. So I clicked on them because they seemed to be relevant. No indication that they weren't. They took me to a website for <city>,<different state>. All 5 of the adwords went to the same city name in an entirely different state. It clearly stated at the top of the page and was restated over and over throughout the page that city and that state. That can't be good for those publishers.