tedster - 4:50 am on May 23, 2010 (gmt 0)
I'm not following you all the way. It's certainly true that legit e-commerce uses SSL for their checkout pages, but they usually don't serve landing pages, article information and the like with an https: protocol.
So in order to get the browser referrer data, won't they need to serve ALL their landing pages as https:? And doesn't that mean a complete re-indexing and re-ranking of the site, with 301 redirects and all that complication?