Free Search Ads on Google Mobile

I received this earlier today regarding a free trial of AdWords ads on Google mobile search results:


"Hello XXXXXXXX,

We are happy to announce a new feature that will allow you to easily reach additional qualified customers who are searching Google from their mobile phones.

In the next few days, your search ads will be eligible to run on Google Mobile Search pages (like they currently do on Google.com).We are offering this feature - and any resulting clicks - for free through November 18, so you can experiment with the rapidly growing mobile platform while still reaching qualified customers.

Each ad's eligibility will be determined by its landing page and only ads with landing pages that can be adapted for viewing on mobile browsers will be shown. You can monitor each ad's performance via a special performance tracking page within your account called "Performance Data: Search Ads on Google Mobile Search."

Again, you will not be charged for clicks on these ads until November 19, at which time we will begin charging the usual CPC prices. And as always, you may opt-out of this feature at anytime.

We hope you find this new feature helpful and profitable, and we urge you to learn more about it at our AdWords Help Center:

http://adwords.google.com/support/bin/answer.py?answer=72226

Thank you for advertising with Google AdWords.
Sincerely,
The Google AdWords Team "

Looks like you're opted in by default if you meet the standards. If mobile isn't for you make sure to login and opt out

I'm sure a lot of advertisers will try it out while it's free but wonder what the retention rate will be when the trial ends.