Rumors spread for weeks by now say that the way of checking supplemental results many of us in the SEO industry used has already or is going to disappear. The old method still works for me though, just compare those two search queries:
Whether it’s true or not there is a new way according to Search Engine Roundtable, even an simpler one:
If you compare the old way and the new one, you see that the results are almost identical. The numbers of results differ substiantally, 4,730,000 (old) vs 90 000 (new) but if you click page 10 here (old) and here (new) they are almost the same minus one.







This thing has 3 Comments
they dont work on sites with redirects to other
sites eg: co.uk to com site of same name
Well then, why don’t you check the redirected to domain, the com instead of the co.uk ?
This is how I check for supplementals:
site:www.website.com/
This is number of pages indexed.
site:www.website.com/*
This is number of pages not in supplementals
Subtract the second figure from the first figure and you have the number of supplementals.