eCPM tells you how much you earn in clicks for every 1000 adviews. So obviously, the higher the better.
If you click on the question mark next to it you'll get an explanation: Effective CPM From a publisher's perspective, the effective cost-per-thousand impressions (eCPM) is a useful way to compare revenue across different channels and advertising programs. It is calculated by dividing total earnings by the number of impressions in thousands. For example, if a publisher earned $180 from 45,000 impressions, the eCPM would equal $180/45, or $4.00. However, please keep in mind that eCPM is a reporting feature that does not represent the actual amount paid to a publisher.
eCPM is not terribly useful. If we couldn't see our CTR, earnings, and impressions, the eCPM would be useless. On a particular page, if you haven't gotten 1000 impressions, it tells you what you WOULD have made if you had gotten 1000 impressions, AND the CTR stayed the same (which it doesn't), AND the PPC stayed the same (which it doesn't). For pages that have gotten at least 1000 impressions, eCPM is a averaging of three different factors (impressions, clicks, and PPC) that vary considerably day to day, even moment by moment. So it tells you what you've made in an average, average, average sort of way.
Unfortunately, you didnt understand how adsense works. eCPM is in fact everything, it can simply tell you your earnings. CTR does not change your earnings but eCPM does. Do a simple calculation, impressions * eCPM =Earnings. So eCPM directly affects your earnings and CTR has nothing do do with it. Of course you need clicks to earn that money but even with lower clicks you can earn the same money which you would earn with higher clicks. So bottom line is eCPM matters.
it does not depend on CTR. Let me explain you again. for e.g On Aug 23: you stats were 1000 20 2.0% 5.20 5.20 on Aug 24 1000 25 2.5% 6.50 6.50 Make sense? CTR does not change ur earnings but eCPM does.
page impressions (1), eCPM($100), CTR (100%) and earning($.1) From above example, what eCPM tells us that IF CTR stays at 100% and CPC stays at .1/click, then after 1000 page impressions, I will make $100. Since neither CTR nor CPC stays the same, so at the end eCPM does not mean much.
that is dead wrong... if the ctr goes down, so will your paycheck, because you are getting fewer clicks. the only time that google pays by cpm is when it's site-targeted ads... most publishers get paid by how many clicks they have.
CTR and eCPM are both just calculated averages. Neither one effects your earning, they are calculated based on your earnings. The raw data is impressions, clicks and earning for each click. The only thing that matters to your actual income is the sum of the earnings for every click you get.
Right. eCPM is merely an interesting calculation, although not very useful. I've always wondered why it's shown. The only factors that affect what you earn are the number of clicks and what you are paid for each click -- and what you are paid for each click is nearly always different for each click you get. So, even your earnings divided by the number of clicks is an average. If you had two clicks and your earnings are $2.00, it could mean you got $0.25 for one of the clicks and $1.75 for the other. Or you may have gotten $0.50 for one click and $1.50 for the other. It almost certainly does NOT mean you got $1.00 per click. Everything is an average and, as I said before, eCPM is an average of an average of an average -- which makes it almost useless.
Actually, CPM is a very useful measure. Let's say you want to test different versions of a page - one with two ads versus one with three ads. eCPM will tell you which one makes more money. Or let's say you have two sites that you feel have equally optimized ads. One has a eCPM of $10, one had a eCPM of $5. Which one will you concentrate on getting more traffic to?
As far as I can see, a high eCPM will get your higher payout based on impressions alone. That means, you only need A LOT of traffic to make money even though no one clicks on the ads itself. For example, if you eCPM = $5, then if that category of ads leave 1000 impressions to all the visitors to your website, then you get paid exactly $5. If Google is serving you ads with $0 eCPM then you can only make money base on people actually clicking on your ads because you don't get paid per thousand impressions.
Not really.........because eCPM is not constant from day to day, from page to page, from site to site.