Hi Andrzej,
This was a very interesting experiment -- thanks for sharing the results
with us.
The last range was the maximum in this case - Google wouldn't display
any hit above 652 (which I find curious, too - because the total number
of hits is, well, significantly higher - and Google claims to return up
to the first 1000 results).
I believe this may have something to do with the way Google compacts
URLs. My guess is that initially a 1000 results is found and ranked.
Then pruning is performed on that, leaving just a subset of results for
the user to select from.
If you try this, self-indulging, query (with filtering enabled):
http://www.google.com/search?as_q=dawid+weiss&num=10&hl=en&as_qdr=all&as_occt=any&as_dt=i&safe=active&start=900
You get: "Results 781 - 782 of about 61,700"
Now try disabling filtering:
http://www.google.com/search?as_q=dawid+weiss&num=10&hl=en&as_qdr=all&as_occt=any&as_dt=i&safe=images&start=900
Then you get: Results 781 - 782 of about 65,500
Hmmm... still the same number of available results, but the total
estimate is higher.
So far I used URL parameters found on the "advanced" search page. I
tried to "display the omitted search results", as Google suggested.
Interestingly, this lead to:
http://www.google.com/search?q=dawid+weiss&hl=en&shb=t&filter=0&start=900
"Results 541 - 549 of about 65,400 "
And that's the maximum you can get.
Sorry, my initial intuition proved wrong -- there is no clear logic
behind the maximum limit of results you can see (unless you can find
some logic in the fact that I can see _more_ results when I _exclude_
repeated ones from the total).
Dawid
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