most people aren't interested in google ads and similar networks.
I think google adsense is way over rated, and from my experience its almost worthless. most people would agree with me.
sure, some people make a lot of money on it if its optimized well and they get tons of traffic but that's just some people. hub pages keeps half of your earnings with Google Adsense for your hub pages, so if there's a click there's a random 50% chance it will go to you. maybe 60% chance.
Hub Pages is a revenue sharing website, this is why. You get the privilege for your articles to have a natural advantage for getting more traffic due to the page rank and networking abilities in hub pages and in exchange you split half of your revenue with google adsense, amazon, anything you enter into that form to use on here.
Let me make something clear - ONLY the amazon / adsense / kontera/ whatever units that are on your hub pages - won't have anything to do with anything else. I figured most people reading this would understand but just in case. . .