CPM Networks

[ORiN]

There isn't any section for impression-based networks so this section seem to be the closest. Anyway, I find that high-traffic websites or forums usually utilize CPM networks to generate revenue since their CTRs are usually quite bad. I used to manage a Disney-related website and used CasaleMedia on it.

[life31]

Using CPM on forums is way a very good idea. In that case there is no limit to your earning out with it. At forums you expect something around 5000+ impressions perdays so in that case it verry good earning.