diberry - 10:56 pm on Oct 9, 2012 (gmt 0)
I wonder why people don't talk about the issue that ALL user metrics measure the effectiveness of the REFERER. If the referral sends the visitor to a page and properly matches and represents the site, the metrics will be better than if the referer doesn't.
This is a really important point. Any user metric is really going to be measuring three things: how well the searcher phrased the query, how well Google matched it, and how good the resulting webpage is as a result. I don't see how any user metric could reveal which of those three things (or combination of any or all) is the problem in an unsuccessful search.
Google is smart enough to think of all this, so I wonder how they try to account for any of it.