Very interesting aek.
This fits well with Google's directory PageRank [directory.google.com] being 44 out of 40 as pointed out by Chris_R.
I also found this very interesting i missed the point Chris made before, ut due to this they really do make it certain that they will show up #1 for anything they would like. (Not that it would be a problem for them otherwise ;) )
I see, the image of the google home page in the google directory is longer than other PR 10 pages. Anyone any ideas of what the significance of this may be.
Perhaps googles home page has a value of exactly 11 and all other pages are ranked somewhere between zero and 11. As if all pages have a value relative to googles home page.
Secondary Google pages commonly have a PR10:
No mystery why the guestimate is 8. They aren't Spinal Tap.
Yeah, somebody check on the drummer.
Makes sense, why not give yourself the ultimate edge.
The difference with the URL's you gave is that they are not guestimate values of PR.
Go to any page rank 10 page and put in a bogus URL
With 3 slashes the page rank always drops to 7
You can try it with any website you like, it drops a page rank with each directory if it's a guestimate.
Now do it with google and it drops to an 8 so google's home page is PR11
It makes sense. There are PR10 pages, so you need to have increments ABOVE 10 to sort/rank those pages amongst themselves.
As pointed out by Chris_R here [webmasterworld.com].
That's the fascinating NerdRank observation.
"Now do it with google and it drops to an 8 so google's home page is PR11."
No that's not what it means. Click these:
What's the mystery? (The index.html is ignored as always.)
[yahoo.com...] = PageRank 8
[google.com...] = PageRank 9
Both have a PageRank 10 for the Root directory.
So they should have the same PageRank.
Yes it is what it means.
Got your reply in there before me Lazerzubb.
"Both have a PageRank 10 for the Root directory.
So they should have the same PageRank."
Good heavens why? That's not written anywhere nor consistently true around the web at all. Many guessed pages have a rank the same as the "parent" level above when the parent is a high PRX. Some guessed pages drop two slots. (I just created a DMOZ category page that did just that.) Pagerank is logarithmic, you guys know that.
Can you show me an example of what you're talking about.
There are jillions, but I stickyed you one.
i could be totally wrong - but having done the development production of a toolbar just like the google one - i'm fairly certain that the PageRank indicator lives in a world of its own, and is not tied directly to the results. i really think people get hung up too much on it.
from a simple functional spec point of view think about:
you put in a url for a genuine site www.foo.com, and you get a measure of its PageRank - for examples sake say 10.
you then change that url to www.foo.com/foo/foo/foo which is a fictitious page. The toolbar is now saying that page has a PR of 7. but we know the page is fictitious. if the page is fictitous it DOESN'T have a PR value.
so doesn't that show that the toolbar is calculating the PR it is displaying based on an examination of the URL - and nothing to do with hooking back up with the google mothership and querying the exact PR for the page you have just entered?
if you think about the kind of load being put on google's servers if everytime someone with a toolbar installed browsed the web it made a call home you'll see why i think the PR in the toolbar is internally-calculated, and no accurate measure of a page's PR.
it is sure the best indicator we've got - but i would want to base my entire googlology on its results
[note to self: is googlology a word?]
I believe that if its a directory down and not a generated page rank it automatically drops a full page rank.
I think Google is 11 page rank....makes perfect sense.
|http://www.google.com/page/ = 9 |
note that [google.com ] without the ending "/" is a 10
>It makes sense. There are PR10 pages, so you need to have increments ABOVE 10 to sort/rank those pages amongst themselves.
I think this is the answer. And, consistent with the directory suggesting that Google has a PR of 11. PR is obviously log scaled. I presume the highest value is 11. The toolbar seems to always round down. Since the highest value the toolbar can show is 10, an 11 shows up as a 10. The toolbar doesn't show a 9 until PR becomes 9.99.
So that would mean that if Google gains backlinks while you gain none (or just fewer on a relative basis) then your PR is going to slide.
Aargh! It's the Red Queen all over again.
Yep adamas, but it makes no difference. If Google's absolute PR rise, then the PR of *every* other site falls also, not just yours.
Geeze - I write a whole diatribe on a similar subject - with graphics and 17 different examples AND The Spinal tap Quote and I never made it to the front page....
I feel unloved
rfgdxm1: That I am aware of, it's just nice once you've gained a 'rank' to keep it ;)
What I don't know, although it's unlikely to affect me any time soon, is would this affect the number of pages taken from a large site? Would that slide?
I read your diatribe the other day and it makes me feel real good that for once I had some solid background with which to follow these nerdish algorithmic discussions.
Good work up. Even I could follow it.
IF google is PR 200 - it doesn't matter - as rfgdxm1 pointed out.
It is all relative. Nothing has changed except the way google is displaying stuff on the toolbar.
By guess is they probably didn't want to hear a bunch of complaining as in reality - google may be the only PR10 site out there.
Everything gets shifted - google has chosen not to shift stuff - but rather add to the top.
Thanks Jim :)
>By guess is they probably didn't want to hear a bunch of complaining as in reality - google may be the only PR10 site out there.
I am guessing, although I may be wrong, Google has the highest absolute PR of all sites. *Some* site has to have more PR than all the others. That there is more than one PR10 site out there proves that all PR10s are not equal.
Sorry Chris R, I honestly hadn't seen your excellent article on the subject before I posted. You definitely deserved the front page.
The PR of a page is always above 0 and below 11.
A page with PR10 can actually be 10.something, even 10.999999999999. So, 10 is not the top, the (theoretic) top is 11.
You can understand this if you deeply observe the directory PR bars. They use a multiplicator of 4 just to obtain a wider bar, but if you follow all the values of the scale, you'll reach the top value of 11:
0-4 (5 units)
5-10 (6 unit)
11-15 (5 units)
16-21 (6 units)
22-26 (5 units)
27-31 (5 units. it was 27-32 before, following the 5-6 units path, but Google changed it recently)
32-37 (6 units)
38-43 (6 units) (that is 43.9999etc... Divide it by 4 and you get a theoretical top of 11)
The values used for each step of the scale was probably set manually, but they clearly lead to a top of 11.
Unsurprising, Google homepage shows PR11 (44 pixels) in the directory. Maybe because the PR theory is based on a "googlecentric" model of the web, or more probably because Google really has a PR value of 10.999999999999, rounded to 11.
I wrote an article about this subject and the PR calculation, with a simple picture of the PR distribution. You can find it in the articles section of the website in my profile, but it's in italian! ;)
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