Monumetric, which focuses on providing ad optimization, pays out on a per-impression basis.
This allows you to earn when visitors see ads on your pages, though an impression-based model pays less than a click-based model.
Monumetric has four programs for monetizing client websites that revolve around monthly pageviews, while prioritizing mid-sized blogs with a minimum requirement of 10,000 monthly page views.
This figure is lower than many other leading ad networks. It also supports minimum payouts of $10.