More on setDomainName, sub-domains, and internal referrals

A recent forum discussion I was involved in raised a great question about just how Google Analytics goes about setting its traffic source cookie incorrectly when you have sub-domains and have followed the steps for tracking sub-domains properly in your page tags.  I wrote out a quick reply on the forum and decided it would be good fodder for the blog, so I've brought some of it over here for your reading enjoyment. The discussion I was involved in reference an article on the fantastic ROI Revolution blog about internal referrals in Google Analytics.  The point raised ...