Brian,
I did file a ticket yesterday, and got a response, as follows:
"I think the reason for this is straight forward to explain. If you
try your same search for summer and add the filter=0 parameter:
search?q=summer&btnG=Search+this+site&client=default_frontend
&output=xml_no_dtd&proxystylesheet=default_frontend
&sort=date%3AD%3AL%3Ad1&entqr=3&entsp=0&oe=UTF-8
&ie=UTF-8&ud=1&site=default_collection&filter=0
You will get about 1400 results. The reason is that you get more when
specifiying site: is that now the duplicate host filtering is
deactivated but you have just the subset from this host.
For more information about the filter parameter please have a look
here:
http://code.google.com/apis/searchappliance/documentation/60/xml_reference.html#request_filtering
Does this sound logical to you?"
Honestly, I do not understand the logic above but, since I use
filter=p parameter by default, my search pages behave themselves,
unlike GSA Test Center. Anyway, it's good to have this information in
the groop's knowledge base.
Thanks, Brian