Just received this email: This is to let you know that during a revalidation process of your site, co-op ad network ads were not found on the following page: http://www.gadgetmix.co.uk/gadgets/digital-cameras-10.htm Your ads have been taken out of the rotation until it has been corrected. You can revalidate your site manually by logging into http://www.digitalpoint.com/tools/ad-network/ If you need any assistance, you can visit the forum at http://forums.digitalpoint.com/forumdisplay.php?f=34 (do not reply to this email, as it is not read by anyone). The ads are on this page (they are on every page on the site), so why have my ads been taken out of roatation?
Manually revalidate and it will come back. Can be a few reasons why it didn't find them there at the time.