Bullet Points to focus.
Good ol’ Zipf
You can’t predict.
Things change
Traffic has limits
Ad inventory has limits
Self-competition
High velocity means lousy control
Taken from here
Help in understanding why your income from adsense sucks
Really that was a great post about 5-6 years ago when he wrote it. but now you can’t say “Adsense” because, well no one uses adsense any-longer. There is no money in it, google has shut down the income as if they monopolize the internet. So the site designers go elsewhere.
But you can use his tips on other advertising companies, like adbrite
Here is someone who sees what I see
See I see these people talking about $500-$5000 a day in traffic. I think that is nuts. I don’t see that kind of money, that stuff is way way way deep in my adsense crushed dreams. One guy responds about bidvertiser, really, I never saw a dime from bidvertiser.