I hope they do too, but I don't see any evidence with adsense or google products that relates to these allegations.
However, it is weird that since panda, my adsense ad space ctr has went way up and the cpc has went up. However, I can't put the two together yet.
The reason: Bottom line is corporate profits, but who knows.
They might not be doing anything wrong, but I still believe a 3rd party should review it to make sure.