Google announced that it is now making sure that ads linking to Mobile app downloads automatically appear only on devices that actually offer those apps. In addition, the ads will display a "download" link rather than a URL.

"Simply include 'itunes.apple.com/' or 'market.android.com/' followed by the app name in the ad's visible URL, and it will automatically display as 'Download iPhone App' or 'Download Android App,'" says Katrina Kurnit of Google's Inside AdWords crew.

Advertisers also have the option to select specific devices or carriers for their ads in general.

"If you've chosen to show ads on iPhones and other mobile devices with full internet browsers, you can now target specific mobile devices or carriers," says Kurnit. "This feature makes it easier for you to reach the right users if you have a carrier- or device-specific message. This includes landing pages that have been optimized for a specific device, billing relationships with certain carriers, or mobile apps developed for a specific platform. For example, if you sell iPhone cases, you can use device targeting to ensure that users with Android phones won't see your ads."



Mobile Internet usage is expected to continue to increase rapidly. That means a lot of people using a lot of different mobile devices through multiple carriers. Google's new targeting options could become increasingly important in getting your ads seen by the right people, depending on what you are advertising.