Back in November of 2006, I wrote about Google Base allowing submitters to specify AdWords ads as attributes. Well, according to an email posted in the Google Base Help Group, that’s no longer the case:

Unfortunately, the decision has been made to discontinue the feature to submit AdWords ads through Google Base, so the bug will not be fixed. I apologize for any inconvenience this causes you. However, we found that this feature wasn’t giving advertisers the return on investment that they have come to expect from Google AdWords. In an effort to keep the best interest of our advertisers in mind, we’ve decided to discontinue this feature.

If you’re submitting AdWords ads in your Google Base feed, make sure to delete those attributes and create your ads through Google AdWords.