Today adsense mail:
Hello,
We recently announced that on August 30, 2013 it will no longer be possible to modify AdSense ad code on Google Sites pages. As an update, these changes will now take place on October 10, 2013.
As previously announced, this means you will no longer be able to edit or add new ads to your existing Google Site or new pages. However, any ads you're currently showing on your Google Site will not be altered or removed, and you'll continue to be credited for all valid earnings.
This does not require any action on your part and will not affect the current implementation of ads on your Google Site. In addition, this will not affect the status of your AdSense account, and you can continue to place AdSense ads on other websites you own that comply with our program policies.
To learn more, please visit the Help Center.
Yours sincerely,
The Google Sites Team
© 2013 Google Inc. 1600 Amphitheatre Parkway, Mountain View, CA 94043
You have received this mandatory email service announcement to update you about important changes to AdSense on your Google Sites account.