I'd be interested in seeing what happens when you bucket citations by domain instead of URL. Google Analytics counts over a thousand unique referring SO pages to Cocoa Controls (http://www.cocoacontrols.com) this year alone. But, of course, most of the links back to my site are long tail.
Another good reason to do this is for example the android tag. Most of the top results are Android documentation for basic classes like ASyncTask and Activity. If I could filter out google domains I'd be left with interesting links related to Android.
