CPM ads (an abbreviation for Cost Per Thousand ) is the oldest type of site monetization. You put banners on your site and advertisers pay you based on the number of unique impressions/page views your site has.
CPM ads are the easiest form of site monetization because they require almost no effort on your side, but they are also the least feasible because as a rule (unless you have really high traffic and your audience is well-targeted), the rates are low. Some CPM ad networks pay as low as $.05 per 1,000 uniques, which means that you need millions of visitors in order to make $100-200 a month.
Popups and layer ads pay a bit more ($.5-2 per 1,000 uniques/pageviews). They could bring you a few dollars a month but many visitors find them especially irritating and this is why many web masters are not willing to put popups and/or layer ads on their sites.
There are high-paying CPM ads – for instance ads paying $2-5 per 1,000 uniques but usually the networks that run them have very high traffic and quality requirements for the sites that are eligible. As a result, it is very hard to get into these networks and take advantage of these well-paid CPM ads.
There are many CPM networks we can recommend. For sites with lots of traffic the choice better and some of the good options are Advertising. com. TribalFusion. CasaleMedia. and ValueClick because there CPM rates are good. AdBrite. AdToll. Right Media. and BurstMedia are also good. Some of these networks are CPM-only, while others have other types of ads as well. Google also has CPM ads, so you may want to try them.