This is indeed an old topic that has been thrashed in countless other forums. However, let me throw in a twist (which I think should make it useful for all - new and old users): Which ad network besides AdSense fits best in the "type of web site". So is AdBrite better than CPX for high content sites, is Kontera a smarter solution? Which ad network works well on forum web sites? On web site that primarily offer downloads (files, games, images) which ad would yield the best earnings? Assume the traffic factor is constant. I know there are many here who know a lot, have used so many alternatives to AdSense, so the aim of this thread is to leverage their intelligence. Some actual numbers (CTR, ad impressions and earnings) would be greatly appreciated.
I think the best adsense alternative is affiliate programs. You can make more off one sale than most sites make with adsense.
It really depends on the site.. For me, Kontera is the best performer right behind Adsense - and using them together is a great way to maximize earnings. I guess every webmaster has to try all the different programs and choose what works best..