CPM networks will pay you per every impression you serve. So, if you have a
page that gets 100,000 page views per day, and say for example that the
CPM network will pay you $1 per every 1,000 impressions - then you would
make $100 a day.
Generally, you need to have a certain level of traffic before a CPM
network will want to take you on as a publisher. In addition to banner and tower
ads, some of the CPM networks will also give you pop-ups and pop-unders to
display to users for additonal revenue.
Of course, the more page views you have, the more you can make with CPM
networks. So, if you have a very high trafficked site which isn't working
well with the content targeting - try applying to these programs:
There are tons of CPM ad networks out there - here are just some of them. And, of course
the good thing about there being multiple networks is that you can apply to others
if some don't accept you - and also, once accepted, you can do testing to see
which performs the best for you:
Casale Media
Value Click Media
Tribal Fusion
Blue Lithium
Right Media
Advertising.com
Burst Media
