I would like to identify Google Base as a seperate SE.
My server log entry for a click-through from Base is
83.104.35.242 - - [18/Aug/2010:11:31:53 +0100] “GET /white-distressed-photo-frame-p-453.html?utm_source=ProductSearch&utm_medium=GoogleBase&utm_campaign=Feed2 HTTP/1.1” 200 4396 “www.google.co.uk/search?hl=en&q=distressed+photo+frames&revid=1630363542&sa=X&ei=vLVrTPi4GJCb4AaNwIX9Ag&ved=0CFYQ1QIoAg” “Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/530.19.2 (KHTML, like Gecko) Version/4.0.2 Safari/530.19”
where ?utm_source etc is what I control.
I can’t see how to extend SearchEngines.php to identify Google Base seperate from google.