I need your help now! This problem has been puzzle me for a long time and i can't understand google!
Detail as follows:
1. Do a site: search - domain.com site number is 120,000-140,000 for one year 2. Do a site: search - domain.com/products site number is 400,000-500,000(subcatalog site four times more than root site) 3. google webmasters tools->google index->index status->Total indexed 807,113
Why is this case? The website is important for me, look forward your nice reply£°
Best Regard! Jim
[edited by: aakk9999 at 2:20 am (utc) on Dec 26, 2013] [edit reason] Formatting [/edit]
Because Google knows that 99% of the time "site:" searches are only done by webmasters who are trying to manipulate their Google rankings and so Google does not accurately report "site:" search results.
On a separate note - when Google is looking at large volume of results they will estimate the number of pages to save on computer resources. Sometimes these estimates can be very off. Google does not really worry about this because real human searchers do not care if Google has 224,674 matches or 489,147 matches since human searchers normally look at just the first ten results and rarely go past 100 results.