Google Changes Display URL Policy: One Domain Per Ad Group
The Google AdWords blog has finally announced that the new display URL policy will go into effect the week of February 24th. The new policy, which I reported at the Search Engine Roundtable about a month ago, and was confirmed by AdWordsAdvisor (an official Google representative in WebmasterWorld), will disallow multiple display domains per ad group.
That means you can only have the same domain showing in a specific ad group in the display URL field. For example, you cannot have one ad in an ad group with the display URL of www.searchengineland.com and another ad in that same ad group with the display URL of www.seroundtable.com. Both ads in that shared ad group must have the same root display URL, so www.searchengineland.com and subdomain.searchengineland.com can be in the same ad group but the previous example is not allowed.
For more examples, see the AdWords blog post.