I have earned a penny today from AdSense (yeah... my site is small), yet I have no clicks, and only 75 impressions. I'm just wondering how I got the penny.
are you using digitalpoint adsense revenue sharing ? ... then maybe there are CPM ads or CPM ads on your page
I get these from CPM ads here at DP ... they confused the hell outta me the first few times until I figures out what they were.
If you go to Edit Options on your DP account there will be a helpful tip: "If you choose to enter your AdSense client ID, you can also specify a channel ID as well. It would be a good idea to have a unique channel ID for this forum (then you can track stats specifically for the forum)."
Well, I do use DP AdSense revenue sharing, but I didn't know AdSense had CPM ads or anything. That's pretty cool.
adsense now offers text as well as image cpm ads... image cpm ads pay higher than text cpm ads though...