This ratio is obtained by dividing the number of click-throughs by the number of impressions. The number of times that a visitor clicks on your advertisement and actually links to your web-site. Hits - The number of times a server is accessed. Hits are irrelevant to an advertiser, because a visit to each page or graphic could count as one hit.
Impressions are what are relevant to advertisers.
For example, an ad with a multiplier of three will be seen three times as often as an ad with a multiplier of one. All rights reserved.