Blue scatter is a discharge GPL licensed Perl CGI tracking and web site activity measurement script which generates Apache combined style access log files. These log files tooshie be analyzed with nigh standard log analysis tools to cross site's popularity, referrers, hosts, etc. The logging is based on inserting a microscopic piece of JavaScript or SSI codification into every web page. This codification requests a very microscopic disconsolate scatter envision from a server where the call is logged. Blue scatter tooshie also be configured to hardening and log session and persistent cookies. This tooshie be used, for example, to cross pay-per-click seek engine ROI.