What does an impression really mean?
Here is my question - we all know that an impression is recorded each and every time someone searched for our keyword and our ad appears on the page. What if for some reason my ad appeared in the 15-20 or 100th page of the search results. No one will be looking for the pages beyond 5th or 6th page of search results. Will google count ad occurrence on such deep results as an impression too? if so only the people bidding highest money for keywords will get benefit and the later will not. Just a thought!