if try to cheat to google then not only u but also every body will be band so this is my suggestation dont try to cheat google adsense team
Here is your answer. It is no problem as long as you are in compliance with everything else. But need to follow steps to allow google to crawl these pages so relevent ads will be shown. https://www.google.com/adsense/support/bin/answer.py?answer=37081&topic=8439 Google page information says: Create an authentication rule by accessing the Site Authentication feature in your account, located under the AdSense Setup tab. Log into Sitemaps using your Google Account. You must be using your Google Account in order for any changes you make in Sitemaps to be reflected in your AdSense account. Add a site to your account by following these instructions. After you've followed the instructions, on the next page, choose the Verify your site link under the >> Next step section. If you can't find it, then go back to the Sitemaps homepage and then follow these directions. - To learn about the two specific types of verification, see verify using META or verify using HTML. - To learn more about verification in general, see the Webmaster Help Center. If you're having problems, see the Webmaster Help entry on errors for assistance.