A WebmasterWorld thread has several publishers complaining that ever since Google went live with the certified 3rd party ad networks to expand the inventory, publisher's earnings and clicks have dropped drastically.
Of course, most people who voice their opinions are likely to complain, which is why I want to run an anonymous poll. Have you noticed your October earnings drop from previous months. Do note, this new network came in about mid-September, so keep that in mind when reviewing your earnings and taking the poll.
Some publishers have already blocked the certified 3rd party ad networks from showing on their sites - will you?
Forum discussion at WebmasterWorld.