You may have seen a plusbox below some AdWords ads that displays several products right on the Google results page. This is because Google has been giving certain advertisers a chance to participate in their beta test of combining AdWords ads with Google base to display product feeds directly below ads.
If you want to be a part of the test, however, you are out of luck because the test is coming to an end. Google will now be assessing feedback from the advertisers that participated. Look out for availability of this feature in the near future.
