where/when google gets its backlinks

[Brave Boy]

I'm beginning to understand the whole concept of PR and backlinks by now, but a few curiosities have just cropped up.

1. When google does its backlink update does it get the links from its present cache of the originating page or from a freshly downloaded copy of the page? If it's the latter, then does every page in its index also get an updated cache of its content on google at the same time?

2. When someone does a search on google, is google working from its own realtime backlink count (ie. updated freqently for some sites) or from the backlink count as it was just after the last major backlink update? To make that a little clearer; is it like the situation with PR - the toolbar showing PR3 as it was last month, but ranking the results according to PR4, its realtime-calculated value.

[Brave Boy]

1. Present cache. There is no way Google could download the entire Internet every day that it did a public back link update.

2. Google always works from internal back links for search result algorithms.

[Little_Dragon]

Google Update backlinks and PR once in 90 days( Estimate)

[fransome]

When was the last update?

[fransome]

When was the last update?believe 78 days ago.

[Little_Dragon]

Any guesses on the next date? About a fortnight? Is it usually at a weekend?

[Brave Boy]

http://www.seocompany.ca/pagerank/page-rank-update-list.html

[fransome]

Next PR update is about to reach. Probably it will take place in mid october.

And about BL update, Google keep all backlinks in its database but shows only small no. of backlinks. B'ecoz Google give prefrence to those links only. and they are the real player which counts and helps in ranking boost.

Thanks_

[fransome]

you also can try @www.midomain.com Today it's showing for me a very huge number of links.

[Brave Boy]

So if I update my pages before changes take place will it remain my page rank for next 90 days???
Because i was thinking of updating some of the pages and also i wanted to add some new pages.