Can my PR change?

during the month

[Andrew Thomas]

Can page rank change during the month, or only after the 'googledance'?

And is page rank only affected by the number of incoming links?

thanks

[lazerzubb]

PageRank is extremly complex and it's very misunderstod, your PageRank can not be changed between updates.
It can be increased if they find new pages which links to you, but you will not see the difference until they do a "UPDATE"

PageRank is the reason why they update their index every month, to spider all the pages takes less time, and it's an ongoing system.

PageRank is calculated on a lot of different machines and each page has it's own unique PageRank.

PageRank is a calculated value of the quality of your inbound links, so sometimes you can have 3 quality inbound links and get a higher PageRank, than if you have 10 inbound links.
Also it's almost impossible so find out on a normal page if it's valuable or not, and most of the time the value you see in your toolbar doesn't matter at all.

[ciml]

I don't want to disagree with the Gogole Update expert, but didn't we have a mid month PR update thread a while back?

<lots of searching...>

In early July we had a thread [webmasterworld.com] where there were reports of PR changes. Even Yahoo was mentioned, this was between updates [webmasterworld.com].

I haven't seen this happen since, so maybe Google went back to updating PR only at the update?

[lazerzubb]

Interesting, to bad we can't check that index, because it wouldn't be hard to spot it if it was a PR update, the only thing i find hard about that was that it takes so much computerpower to calculate PageRank that it would be very hard to update the PageRank for every page in their index in 14 days, i might be wrong but i think that is why FAST can update their index in 14 days and Google can't.
But Google have started to update the content on the pages more also known as FRESH! and Everflux.

One guess is that they tried out a TEST PageRank system which would do that they didn't calculate the PageRank value to the end but that they did a approximation instead of calculating the value until they reach convergence.
And therefore use a different formula to calculate the PageRank which would mean less iterations until the reach convergence, but it's not exacly accurate.

I don't want to disagree with the Gogole Update expert,

Gogole that was something new ;)

[ciml]

Nobody's ever explained to me why they think it takes so long to calculate PageRank. I would expect it to a long time to create the inverted word indices, but with PR you just need to go through the URLs from start to finish a few times.

Seeing as they include the backlinks of pages spidered late in the cycle, surely PR must be iterated at the end?

> > Gogole

Ah, that must be some other thing that updates once per month. You can take my comment to apply to Google as well, though:).

[ukgimp]

There was a thread a while back about the re-calibration of some of the big boys so they had a pr10. Eg DMOZ, Yahoo etc and Macromedia.

Was that mid month or out of sync with the normal update shcedule.

Cant find it though.

Cheers

<added>
Here it is
[webmasterworld.com...]
</added>

[ciml]

Good find. So maybe it was just a Tooblar scale change. It would seem odd to have a mid-cycle PR update just in one month.

I knew I shouldn't disagree with the "Gogole" Update expert:).