Another pay per click advertising web monetization service is Clicksor

Clicksor is a contextual advertising method.

Payment is up to %85 of the revenue which is quite high. Payment is every 2 weeks. They have popunders, search boxes, inline text ads, layer adds and also xml feeds available. They are reputable and have a good record.

Adversal pays you per page view. The rate is $1.20 per 1000 US page views and $.50 per 1000 non US pages views.

Basically adversal is a pop-under system but it is pretty unobtrusive. If you have decent traffic, you can earn a little bit here. Internal links can’t be blocked by popup blockers so you can still earn even if they have them.

Simply sign up and place the code in your site. The more pages you place the code on the more money you make.