Yahoo Index Size : 25 to 35% bigger than Google

That statement make me laugh !
How to find the real size of the index of a search engine ? Don't try, it's impossible !
The best way to figure out is to use a word who will give you less than a thousand results, because you never can see more than a thousand in SERPs.

Let see what we got here with a word with less than 1,000 SERPs:

Bleuetiers (Blueberries plants in french)
Google : First digits on Bleuetiers:

Web	Results 1 - 84 of about 441 for bleuetiers. (0.99 seconds)

441 ? Wow ! Let see what will got really by clicking on :
repeat the search with the omitted results included.

Web	Results 1 - 100 of about 405 for bleuetiers. (0.19 seconds)

405 ? Not bad ! Well, let see the last page of results with a click on the last page here :

Result Page:

1

2

3

4

Next

Oups :

Web	Results 101 - 182 of about 200 for bleuetiers. (0.25 seconds)

Now we got the real number of 182 results

Same exercice with Yahoo

Results 1 - 77 of about 244 for bleuetiers - 0.05 sec. (About this page)

244 results or 77 ? Let see with a click on :
repeat the search with the omitted results included.

Results 1 - 100 of about 925 for bleuetiers - 0.07 sec. (About this page)
Now 925 results ??? A weird glitch here !

Let see with a click on page 10 !

Results Page:
1 2 3 4 5 6 7 8 9 10 Next

Results 201 - 234 of about 234 for bleuetiers - 0.03 sec. (About this page)

234 results is the real digit. That 50 more than Google and with that we can saw that Yahoo have around 25% more results than Google for the first time.

Second try with "st-joseph-de-la-rive" (a small town of Quebec province)

First estimation for Google : 811 results

Real digit for Google : 384 results

Web	Results 301 - 384 of about 809 for "st-joseph-de-la-rive". (0.39 seconds)

First estimation for Yahoo : 6,010 results

Real digit for Yahoo :484 results

Results 401 - 484 of about 1,710 for "st-joseph-de-la-rive" - 0.05 sec. (About this page)

100 more results for Yahoo who give us again about 25% more results.

Third try with "ste-catherine-de-la-jacques-cartier"

First estimation for Google : 3,980 results

Real digit for Google : 387 results

Results 301 - 387 of about 3,970 for "ste-catherine-de-la-jacques-cartier". (0.20 seconds)

First estimation for Yahoo : 5,880 results

Real digit for Yahoo : 556 results

Results 501 - 556 of about 1,490 for "ste-catherine-de-la-jacques-cartier" - 0.58 sec.

Again 169 more pages for Yahoo !