The important detail for search marketers that depend on Yahoo SERP concerns Yahoo's reported agreement to use BING as their search product.

According to a report by AdAge entitled, Do You Bing?, a deal is reported in the works between Yahoo and Microsoft.

Yahoo SERPs May Be Changing - to Bing!

To learn more about location extensions, please see the location extensions overview section of the Google Adwords Help Center.

The new converted ad will look identical to the local business ad and will appear in the same places as your local business ads.

If you edit a local business ad, it will be converted to a text ad with the ad's address attached as a location extension.

For those of you who have existing local business ads, your ads will continue running as long as you don't edit them.

Instead, you can simply create new local ads with extensions from scratch or add extensions to your existing text ads.

With the introduction of location extensions, local business ads will no longer be a separate ad format.

Your ads can show with their relevant ext on G and G Maps and as regular text ads without ext on partner site in the Search and Content N/w