AdSense Stats and Performance 101

As more and more people are getting into the AdSense game, there seem to be many questions asked again and again by the newcomers. Here, I have compiled detailed explanations to some common AdSense terms, facts, and performance tips. Terminology Real Stats (Figures based on actual performance tracking updated several times a day) Page Impressions: The number of times an ad unit (a collection of 1 to 4 ads). If you have two ad units on a page, then every time the page loads you get two page impressions. Page Impressions DO include PSA (Public Service Ads) and Alternate Ads. Clicks: The number of times someone clicks on an ad. Clicks on PSA will be included in this stat as well. Earnings: Money you