I tried Managed Placements and chose one of the UK's biggest Classifieds website to place ads with good bid but error - "the combination of our current campaign settings & targetting criteria do not appear to have enough Google AdSense pageviews to be meaningfully diagnosed" is being shown and ads are not displayed. Someone please help me to sort this. Thanks in advance
Maybe this information will be helpful for you: http://www.seochat.com/c/a/Google-Optimization-Help/Creating-a-Google-AdWords-Campaign/ http://www.stayonsearch.com/how-to-start-a-google-adwords-campaign
are you using image ads? if so you need to ensure the site does serve those ad specs. likewise if you are using demographic targeting (age, gender, etc).