If you are advertising in Google AdWords, you may have a new task at hand. A recent policy change now in effect by Google is disallowing multiple display URL domains within a single ad group. If you currently advertise multiple domains in a single ad group, you will have to go in and change your ads.
This policy change only applies to ad groups that display different domain names. Different subdomains and domain extensions are still acceptable. For example, if you have an ad group with the following display urls:
www.tengoldenrules.com
marketing.tengoldenrules.com
tengoldenrules.com/marketing
You will not have a problem because all of the above urls have the same root domain (tengoldenrules.com).
However, if you have an ad group with display urls like these:
www.tengoldenrules.com
www.10goldenrules.com
www.tengoldendeals.com
The ads are no longer accepted by Google because the root domain differs in each.
Fixing your ads to comply with this new policy could be a large, arduous process, especially if you have a large scale account. The easiest way to find out which of your ad groups cause an issue, you can contact your Google rep or call 1-888-246-6453 and they will be able to tell you exactly which ad groups you need to change.