AndyA - 4:06 pm on Jan 7, 2010 (gmt 0)

Thanks for the information, ASA.

I would suggest that the PM consider an option that allows webmasters to input accurate traffic statistics for this report, however. Perhaps with the notation that the traffic info was provided by the site, and cannot be verified by Google.

Yes, I can see where there would be room for abuse, but in my case there's no advantage to my site being listed in Ad Planner, as it's not reporting 84% of my unique visitors. That is a considerable variation, and not a good representation of my site's traffic.

So there's no incentive for me to have my site listed, and advertisers who might want to target my niche overlook my site as they feel it doesn't have enough traffic to warrant targeting.

I don't plan on adding Analytics to my site, and based on the current factors involved in estimating site traffic for sites without Analytics--with 84 percent of unique visitors being missed in my case--there's a missed opportunity for both advertisers and sites in AdSense if this is very widespread.