The following data is a sample of analysis by visitor marketing program.
Fraud click green
Green is a Fraud click visitor, click CPC advertising without opening homepage, which spent only advertising cost and visiting a program such as 'search bot'
(Green is shown in green color in the list)
Green is the visisting information which can not analyze by other log analysis.
Access frequency is twice when visiting twice by double click, Counting the click F5 after visiting homepage.
So other company has the error about the number of CPC AD visitor.