launch3 - 8:56 pm on Aug 5, 2011 (gmt 0)
I took the same advice from Google to add units to certain spots and I saw absolutely no positive change in traffic or PR & clickthru's were just marginally better. My PR went down one notch yesterday morning on one.
My sites revenue will be better monetized from building a loyal subscriber list instead of adsense.
With one hand they wanted me to add units and with the other hand they pandalized me.