Filtering unwanted ads - impact on revenue

[grumble]

I am looking at joining an CPM program for my site but due to the type of content (rather than my morals!) I would prefer not to include sex, gambling/lottery ads.

Has anyone experimented to see how much revenue they lose by excluding these types of ads?

[jetteroheller]

Look in the AdSense forum, there are just several discussions about increasing revenues by blocking junk ads.

[Curry]

The established networks such as TribalFusion and FastClick don't offer the "junk ads" you mention, this is only a problem with networks with lesser reputation or if you go into a marketplace like AdBrite. AdBrite though requires you to validate every campaign you run and allows you to set a 3-level filter on default ad content (normal, normal+gambling, everything if memory serves me right).