jdMorgan - 10:15 pm on Apr 15, 2009 (gmt 0)

I've occasionally seen this new google.com/url referrer format in my server's raw access log file since 22:50 GMT on April 10th. So it seems that the blog post came four days after the initial roll-out.

However, it looks like some of the query parameter names have changed, so I may have just been seeing a 'beta test.'

Jim