What about tracking URLs?
We do understand that many advertisers utilize tracking URLs within the destination field of their ads. Therefore, if the URL of your landing page matches that of your display URL, your ads will be approved.

For example:

Display URL: http://www.google.com/adwords
Destination URL: http://www.trackingurl.com/google123
–> Landing page URL: http://www.google.com would be acceptable

Display URL: http://www.google.com/adwords
Destination URL: http://www.trackingurl.com/google123
–> Landing page URL: http://www.trackingurl.com would not be acceptable

hope every thinnk get clear

Could help you BUT a subdomain Google’s sees often as a complete new domain. So better work perhaps with sub-directories that keep a bit of value…

According to the official documentation at Google, mixing and matching sub-domains is allowed. As long as the top level domain remains the same, you will be fine.

Display: sitedomainame.com
Destination: affil1.sitedomainame.com

Question then regarding sub-domains. If I were using affiliate sub domains like:

affil1.sitedomainame.com to affil1.sitedomainame.com
affil2.sitedomainame.com to affil2.sitedomainame.com
affil3.sitedomainame.com to affil3.sitedomainame.com

And they all ended at the same exact starting domains as illustrated above HOWEVER each domain had the very same content with the exception of minor changes.

Would this be legal?

A word of advice: When you change an ad (even if it’s just the Display URL), Google sees it as a brand new ad, not a modified one. For this reason, you DO NOT want to do an account-wide find and replace for the Display URLs and just post the changes. Why? Because when you do this you are tossing out your ad history and starting fresh. This can negatively effect campaign performance (hence Google’s warning on QS). So, for anyone who is changing display URLs throughout their accounts, I strongly recommend the following method:

Duplicate your ads that are currently running, changing the URLs on the new ads to conform to the Display URL policy, and run them side-by-side with your current ads for several weeks. This way, the new ads gain history WHILE maintaining the history of the old ads. Then, as you get closer to April 1st, pause the ads with the bad display URLs. By this time, your new ads will have some exposure, some history and will be trusted more than a couple of brand new ads flying solo.

Search Engine Roundtable explained the details of this last month:
http://www.seroundtable.com/archives/015983.html

You have 6 weeks. That’s plenty of time. Trust me, you do not want to make account-wide bulk changes to all of your ads…unless you’re my competitors

As the discussion has unfolded since I broke this tid-bit last week, more information has come to light:
Google’s Official Announcement:
http://adwords.blogspot.com/2008/02/update-to-display-url-policy.html
Search Engine Land right-up:
http://searchengineland.com/080213-084231.php

In short - the “change” to the policy is really in the enforcement of the rules. April 1st (not an April Fools joke) is the date Google set to begin their stricter stance.

Tom -
I suppose that you could consider yourself a “free man” until April 1st - breaking the rules until that point. Though I would strongly recommend against it. The whole purpose of this forewarning was to give advertisers the time to make the right changes to their ads. If you change now, your ads won’t be shut off after the first of April. Does that make sense?

Megan -
Google clarified quite a few points in their official announcement - one of which is in regards to sub domains. As long as the “top-level domain” is intact (i.e. ppchero.com or google.com), you can substitute the sub-domain as you wish (ppchero.com, http://www.ppchero.com, blog.ppchero.com).

Thanks for the comments and trying to understand this update with me!