So, imagine I bought 100,000 visits per month on an established site. Then I went to advertisers and showed them my numbers. I could then charge them say 1.5 CPM, or $150 for a single small ad. The numbers obviously go up for larger ads. Is this a relevant business plan, and are others doing it? It seems almost like a no brainer. The only draw backs may be if their ad doesn't get clicked on, so they stop the advertising. What is this type of thing called, and how can I find out more about it?