Commission Junction

EPC(earnings per 100 clicks)

Three month EPC (earnings per 100 clicks)
This number shows how well an advertiser converts Web site visitors into commissions, over a three month period. Three month EPC values are calculated and updated daily, using data beginning five months previous through three months previous. On the first of each month the "five months previous through three months previous" timeframe changes to accommodate the month change. For example, an EPC rating in June is calculated using data from January, February, and March. It is necessary to use data beginning five months previous to give accurate EPC ratings that may include extended or reversed transactions, or charge-backs.
7 Day Network EPC (earnings per 100 clicks)
The 7 day EPC shows the average commissions paid to publishers for every 100 clicks, over the past seven days. Seven day EPC values are updated each Tuesday using data from the previous week (Monday through Sunday). 

Network Earnings:

This is the total monthly volume of commissions paid by this advertiser (subtracting any charge-backs), relative to the rest of the network. This is done using a "dollar sign" rating system. The system uses the following criteria: 
$$$$$=95th percentile and above; 
$$$$= 80th-94th percentile; 
$$$=60th-79th percentile; 
$$=40th -59th percentile; 
$=39th percentile and below