nuthin - 1:13 am on Mar 8, 2011 (gmt 0)
hmm.. I build out a few local directories and over the last few days, my Adsense earnings appear to be higher on the main site that pulls the revenue, rankings/traffic are all in check, I would also describe these pages as "thin" business profile pages that are custom optimized to hit local terms related to the industry the business is in.
Keen to see what other type of sites have been hit as it appears for now, I haven't.
Also got the email over the weekend to add more Adsense units to my secondary directory -- doubt I will do it for now.