This is kind of a difficult question to even try to answer but I’ll be honest with you!
Right now, my average CPM is $0.36. That means for every 1000 ad impressions, I earn 36 cents. That is for a website about PHP and Content Management Systems. So most of the ads on my website are related to those subjects. If I were to change my subject material or even have a single article about something different, my ads would change and I could get higher or lower paying advertisers.
You really need to read this article by microscopic^earthling: http://chaos-laboratory.com/2006/12/18/inc…pc-on-same-ctr/
So, there really are a lot of variables to consider. Additionally, due to the size of his website, the diverse content, and a lot of hard ad optimization on his part, m^e’s website has a much higher CPM than I do. sad.gif
So until I add more content , I have to rely on increasing traffic to earn more money. With more or different content, I should be able to get a larger advertiser base and as a result, my CPM should increase if the new advertisers are better than the ones I’m getting now!
Right now, I get anywhere from $0.02 to $4.06 per click! Obviously, I need to try more for the $4.06. To get more targeted, I’ll need to track what content is getting that type of ad and add more content about that subject.
But, keep in mind I started my AdSense account in December 2006 and have an average CPM of $0.15 but so far this month my average CPM is $0.49.
So the more optimization and content, the better. It also helps that I have about 3 times as much traffic now as I did in December.I hope this helps.