Effective CPM doesn’t represent your earnings – rather, it’s calculated by dividing your earnings by number of page impressions, then multiplying by 1000. For example, if you earned \$0.15 from 25 page impressions, then your eCPM would equal (\$0.15/25)*1000, or \$6.00. If you earned \$180 from 45,000 impressions, your effective CPM would equal (\$180/45,000)*1000, or \$4.00.

The good news is that you do not have to reach 1000 ad impressions to make money. You can make a fraction of the eCPM depending on how many ad impressions. For example, if you did 93 ad impression in one day, you would make 93/1000 fraction of the amount per eCPM.

One thing that got me for the longest time is that I would have over \$200 eCPM and only had like 20 impressions. So my thinking I could make a 1000 impressions and make \$200. What i missed was that I had like one or two clicks that day that paid decent and it increased my eCPM. So in reality I would of not got that much, but probably just the money I already earned, unless i kept the percentage of clicks per impressions. To rely just on ad impressions will not earn you that much but maybe some change per 1000 ad impressions

So your main goal is to hope a lot people click on your ads. Clicking on an ad can pay on average .50 to over a dollar. It can be pass that range though. If you think of it, if you worry about getting a lot of ad impressions then more clicks will follow.

Google will pay after you rack up \$100 dollars in earnings. Pretty sweat deal if you can bring a lot of people to your site and hopefully get a lot of clicks.

How many Ad impressions to expect for a new site

Early this year (2010) I started to take creating websites for the experience and for some extra pocket money from Google adsense. I thought I could create some decent/fair quality websites and track 100+ visitors a day. I was thinking it would be very simple because I was not expecting much from it. But I was fair from the truth.

I started by creating 3 sites:  personal site (nathanhaze.com) with around 10 pages, a graveyard site (graveyardsdb.com) which is around 25+ pages, and web design tutorial (noobcoding.com) that maxed out at 20+ (now it is this site). It has now been about 6 months since they been up and I only get around 10 page views combined from Google Adsense per day. What a fry cry from expecting several hundreds of page views.

Most recently I started a third site, peoplewtf.com, which is a photo blog of douche bag guys. I know it is not the best idea, but I do curve out over 50 impressions daily with it. This is over 10 times what I make from the other sites combined.  I am not discouraged cause I do see growth in the sites more I work on them . I remember getting a couple every other day to having 10 impressions daily and finial to average of 50 daily. I have to admit my sites are not the greatest or do I try to promote them. Fews times I tried on forum boards I would just get a spike for a couple of days.

Final Comment

Google Adsense is easy to set and easy to track.  I would think typical you would expect 3 -5 dollars daily for a site on average. This adds up nicely to maybe pay a phone bill. I would recommend to add Google Analytics to your site  to understand why people are coming to your site. You must be very patience.   I see it as a growing fruit tree from seed (excuse the douche reference).  As in that is will start off slow, but will grow to make decent money. There is other ad networks out there, but most of them will require that you have over 100k impressions per month.