Adsense Teminologies

• Page impressions - the number of pages viewed by your site visitors
• Page CTR - the ads click rate, i.e. #clicks / page impressions
• CPC - cost per click, usually used from advertisers' perspective
• EPC - earning per click
• MFA - make for adsense, usually used to describe sites that is without real content but just have adsense ads... those sites may join the adWords program in order to acquire traffic.
• click dump - sometimes, google will hold up some click earnings from your account (some people said those clicks are higher pay clicks and google has to run some test to verify if those are click fraud). Those clicks will be added back to your account some time later which resulted in a sudden adnormal high earning on a particular day.
• PSA - Public Service Ad, those are for charities and clicks on them won't earn you any cents.
• G.A.S.S - Google Adsense Stats Syndrome, describing people who keep logging into their adsense account to view the earning stats.