LOL, i just noticed my spelling error. I personally prefer CPM as they pay much higher than clicks. Its also a guranteed income. So even if theres no clicks, theres impressions making the money. Pierce
I get most my money per click. But per impression would be a more stable source of income, obviously.
I think I'd make more money from impressions. Is there an ad service that specifically pays for impressions vs. google's cpc?