tangor - 5:56 am on Nov 7, 2010 (gmt 0)
I presume that the above email was sent to one who plays with Google, ie, webmaster stuff and other things where G has an email address... Can't see Google sending that same comment out to all the OTHER websites for which they do not have contact information etc. or any dog in the fight.
This reminds me of pissing in your water supply or pooping around the campfire. Makes for more BAD PRESS than solving problems. The way to deal with duplicate content is to ignore it... oh, wait, can't do that! There would be hordes of webmasters crying foul!
Best I can say that if one plays in their sandbox, their rules ("sandbox" means playpen/play area, not isolation) will apply. Live with it and don't complain.
Over the last three years I've migrated 75% of "ad income" away from Google and saw a 22% increase for income. The Google monster still lives, as a monster, but there are increasingly more predators/competitors---even mosquitoes---nipping at the heels of the monster wherein webmasters can enjoy income without krappola dictates from the creepy line.