jhood - 2:48 pm on Mar 24, 2010 (gmt 0)
CPM ads pay a fraction of a cent, whereas CPC ads pay 10 to 100 times as much.
I blocked ALL CPM ads 4 years ago, by emailing Google. I have no intention of ever turning them on again. Why displace CPC ads with CPM ads, when there is real money to be made?
This is simply not true. It depends entirely on your site, your traffic, your demographics and the deal you have with your networks. We get CPMs ranging from $1-$4 for below-the-fold positions, not as much as the AdSense produces in above-the-fold positions but enough to add up to five figures each month.
Behavioral targeting has greatly improved the payout for display (graphic) ads in recent years and is likely to be the next big growth area for online advertising. Google has pretty well maxed out the text ad market so it's only logical they would look for growth in other sectors.