I use other services and make well over $100 per month. I worked with Google in the past but one month I was owed just over $10,000 and they didn't pay. Despite numerous attempts to figure out why and get paid I was never able too. Now I stick with other companies that aren't so particular and won't screw me on payment.
Adsense screwed me over, too. Some stupid had been clicking on my adsense ads like crazy everyday and adsense suspended my account. They snatched all my Adsense funds for that month. I switched to Adbrite then.
If you make a lot money from Adsense (e.g. $100 per month), do you have Adsense on a lot of different sites or do you just have Adsense on a few sites with lots of visitors?
I used AdSense, and it just didn't seem to pay out very well, Switched to a smaller company and have been doing great.
Also AdSense didn't allow paid traffic to your targeted ads, and watching friends make well over 100 dollars a day doing that made me want to switch to a company that did.