If you have ever done a Google keyword search where your query included a location, you may have seen this type of ad appear. Underneath the sponsored results but before the organic results, a google map will appear with points on the map representing local results for your query. An easy example would be local pizza restaurants- a business-person is traveling and doesn't know the area well. He or she is looking for a good pizza for dinner, but wants one in walking distant to the hotel. That person can look at the map to see the closest match and how to get there.
The ad itself as has a description for a tag line like normal PPC ads. The business web site, physical address and phone number can all be included, making this a very useful tool for businesses in a community.
Need help setting up and creating a local business ad for your Google AdWords account? Don't even have an AdWords account? Either way Webconsuls can help, its what we do.