In September 2011 I had 15 sales that referred from google.com?aclk=. In October I had one.
All of the traffic had KW phrases embedded in the querystring parameter. Nine sales were for active PPC keywords. One was from an old paused KW. Four were for KW phrases that we don't purchase. All of the referrals lacked our tracking parameters that we append to the PPC querystring.
Some of the terms are probably broad match. Why am I not receiving my custom tracking parameters? I check with Google and everything is setup correctly.
Fifteen orders does not account for much of anything. Nevertheless, where there is smoke there is usually fire. Anyone have any observations?