Ultimate Blog Marketing

I used to use it on my sites but was only earning a few dollars a month as it was not showing adverts that were relevant to the sites subject. Being as the revenue was so low, I removed it. I made more money by having a “donate using Paypal” button on my site than I did from Adsense.
It does depend on your sites content, but you could sell advertising space or try to get page sponsership or something like that.