• http://corvalence.blogspot.com Joseph Urban

    Good article. This is a decent explanation for our growing Unknown category in our referrers reporting.
    One missing point on twitter traffic: Twitter apps hit the URL shorteners regardless if the user clicks through. I believe they are automatically assessing the legitimacy of the link. So, Bit.ly and others will reflect a set of highly inflated traffic metrics. I’ve seen 9X multiples on some weeks. I’ve been able to verify this because we do append our tweets with a parameter that we can track.