If it's content network you may just need to get a little higher on the page. buried at the bottom won't get you shit.
Impressions have nothing to do with calculating your ROI because you haven't paid for anything yet.
This is marketing 101 guys... wtf!
Let the ad network determine if you will be allowed clicks or not based on your CTR. That's their job. You determine if the clicks are worth the price you are paying. That's your job.
Not true, impressions play a part in your CPC (impressions / clicks = CTR, CTR affects CPC).Impressions have nothing to do with calculating your ROI because you haven't paid for anything yet.