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Google Update History - PageRank - PR

This Page Rank Update/Export List History contains the dates that Google Toolbar Pagerank (PR) was exported. The longest time between toolbar PR exports recorded in the below Page Rank Export List
PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves "important" weigh more heavily and help to make other pages "important"..

kaistudios.com PR/BL Update Estimation: Next Pagerank 3rd week of January 09.

Page Rank Export List History Table

Year   Info Info Days
         
2008   July 26 TBPR Export: Toolbar Pagerank Export.
 TBPR & BL Export 151/151
2008   Feb 26 TBPR Export: Toolbar Pagerank Export.
 TBPR & BL Export 47/47
2008   Jan 10 TBPR Export: Toolbar Pagerank Export.
 TBPR & BL Export 74/74
2007   Oct 28 TBPR Export: Toolbar Pagerank Export.
 TBPR & BL Export 181/181
2007   Apr 30 TBPR Export: Toolbar Pagerank Export.
Estimated Apr 15/2007 Apr 30		 TBPR & BL Export 98/98
2007   Jan 25 Algorithm Update: Algorithm Update.
 Algo update - Reduce Googlebomb Impact
2007   Jan 25 TBPR Export: Toolbar Pagerank Export.
 TBPR & BL Export 18/18
2007   Jan 10 TBPR & BL Export: Toolbar Pagerank & BL Export.
 TBPR & BL Export 101/101
2006   Sep 28 TBPR & BL Export: Toolbar Pagerank & BL Export.
 TBPR & BL Export 76/76
2006   Jul 13 TBPR & BL Export: Toolbar Pagerank & BL Export.
 TBPR & BL Export 100
2006   Apr 05 TBPR Export: Toolbar Pagerank Export.
 TBPR Export 45
2006   Mar 28/2006 TB Program Update: Google launched a new toolbar update (v 2.0f) for Fire Fox.
http://blog.searchenginewatch.com/blog/060406-090216 Apr 07		 TB Program Update FF v2.0f
2006   Feb 18 TBPR & BL Export: Toolbar Pagerank & BackLink Export.
 TBPR & BL Export 122/60
2006   Mar 30/2006 TB Program Update: Google launched a new toolbar update (v 4.0.513.2948 Beta) for IE.
 TB Program Update IE v4.0.513.2984 Beta
2006   Jan 4 to Mar 27 Infra Update: Infrastructure update.

 Infra Update - BigDaddy
2005   Dec 19 GDPR & BL Export: Google Directory & BackLink Export.
 GDPR & BL Export 106
2005   Nov 04 to Nov 18 Algo Update: Algorithm Update - Jagger 3.
 Algo Update - Jagger 3
2005   Oct 27 to Nov 06 Algo Update: Algorithm Update - Jagger 2.
 Algo Update - Jagger 2
2005   Oct 19 TBPR & BL Export: Google Toolbar Pagerank & BackLink Export.
 TBPR & BL Export 97/45
2005   Oct 16 to Nov 07 Algo Update: Algorithm Update - Jagger 1.
 Algo Update - Jagger 1
2005   Sep 4 GDPR & BL Export: Google Directory Pagerank & BackLink export.
 GDPR & BL Export 85
2005   Jul 14 PR Update:Toolbar Pagerank & BackLink update.
 TBPR & BL Update 83/33
2005   Jun 11 GDPR Update: Goggle Directory Pagerank update.
 GDPR Update 18
2005   May 27 BL Update: Backlink update.
 BL Update
2005   May 27 TBPR Goes Blank: Toolbar PageRank Goes Grey Everywhere For 3 Days. Most claim it is dead.
 TBPR Goes Grey For 3 Days
2005   May 24 GDPR & BL Update: Google PageRank & Backlink Update.
 GDPR & BL Update 32
2005   Apr 22 TBPR, GDPR & BL Update:Toolbar PageRank, Google Directory & Backlink update.
 TBPR, GDPR & BL Update 111/50
2005   Mar 04/2005 BL Update:Backlink Update.
 BL Update
2005   Mar 3/2005 GDPR Update:Google Directory PR Update.
 GDPR Update 28
2005   Feb 23/2005 TB Program Update: Google launched a new toolbar update (v 3.0.119.6) with a change algorithm for computing the checksum. Feb 23 TB Program Update IE 3.0.119.6
2005   Feb 04 GDPR Update:Google Directory PR Update.
 GDPR Update 24
2005   Feb 03 BL & Algo Update:Google Backlink & Algorithm update.
Lots of SEO sites seemed to just drop out of the SERP.
 BL & Algo Update
2005   Jan 10 GDPR Update:Google Directory PageRank Update.
 GDPR Update 88
2005   Jan 1 TBPR & BL Update:Toolbar PageRank & Backlink Update.
 TBPR & BL Update 87/16
2004   Dec 16 BL Update:Google Backlink update.
 BL Update
2004   Nov 25 BL Update:Google Backlink update.
 BL Update
2004   Oct 28 GDPR Update:Google Directory PR Update?
 GDPR Update? ??
2004   Oct 28 BL Update:Google Backlink update.
 BL Update
2004   Oct 18 BL Update Roll Back:Oct 16th Backlink Update Was Rolled Back.
 BL Update Rolled Back
2004   Oct 17 GDPR Update:Google Directory update.
 GDPR Update 67
2004   Oct 16 BL Update:Backlink update - Was rolled back Oct 18.
 BL Update
2004   Oct 6/2004 Toolbar Update: Longest wait for a toolbar update. 106 days.
 TBPR Update; No BL Update 106
2004   Sept 10/2004 Backlinks (BL) Update: Fourth BL update since the last June 23 PR toolbar update.
 BL Update
2004   Sept 8/2004 Toolbar Update: Google launched a new toolbar update (v 2.0.114). Sept 8 TB Program Update
2004   Aug 30/2004 Backlinks (BL) Update: Third BL update since the last June 23 PR toolbar update.
 BL Update
2004   Aug 10/2004 Google Directory Update: First Google PR update since the last June 23 PR toolbar update.
 GDPR Update 158?
2004   Aug 9/2004 Backlinks (BL) Update: Second BL update since the last June 23 PR toolbar update.
 BL Update
2004   July 16/2004 Backlink (BL) Update: First BL updated since the June 23 PR update; No PR update; discussion on the forums of Google going to quarterly toolbar PR update.
 BL Update
2004   From this date to May 6th 2003 Web Rank Info's list from http://www.webrankinfo.com/google/google-dance/historique-google-dance.php is the source for the dates used. Web Rank Info's dates are a bit different than I found from other sources, (they are based on EU time and use a Monday date if the update happened over the weekend), but they are more complete.
I changed the EU Jun 23 date to Jun 22.
 TBPR & BL Update 22
2004   May 31/2004 Toolbar PR & BL Update:
Backlink and toolbar PR update.
 TBPR & BL Update 38
2004   Apr 7/2004 Toolbar PR & BL Update:
Backlink and toolbar PR update.
 TBPR & BL Update 16
2004   Apr 7/2004 Toolbar PR & BL Update:
Backlink and toolbar PR update.
 TBPR & BL Update 22
2004   Mar 16/2004 Toolbar PR & BL Update:
Backlink and toolbar PR update. Google Directory PR update also http://www.webmasterworld.com/forum3/10706.htm .
 TBPR, GDPR & BL Update 50
2004   Feb 11/2004 Algorithm Update:
Algorithm Update, perhaps BL Update. No TBPR change.
 Brandy: Algo Update
2004   Jan 26/2004 BL TBPR Update:
TBPR & BL Update.
 TBPR & BL Update 15
2004   Jan 11/2004 Toolbar PR & BL Update:
TBPR & BL update.
 Austin: TBPR & BL Update 19
2003   Jan 23/2004 Toolbar PR Update:
Toolbar PR update.
 TBPR & BL Update 17
2003   Dec 6/2003 Toolbar PR Update:
Toolbar PR update.
 TBPR Update 20
2003   Nov 16-24/2003 TBPR, BL & Algo Update:
Toolbar PR, Backlinks and Algorithm Update.
 Florida: TBPR, BL & Algo Update 21
2003   Oct 26 35
2003   Oct 2/2003 GDPR Update
Google Directory Update. Last GDPR Update was 7 months ago.		 GDPR Update
2003   Sept 21 23
2003   Aug 29 21
2003   Aug 8 54
2003   Jun 15 40
2003   May 6 25
2003   All the below dates are from eSavvyMarketing www.esavvymarketing.com/index.php?nic=google-dance-history and double checked against the WebmasterWorld list found at www.webmasterworld.com/forum3/2657.htm Apr 11 36
2003   Mar 6 41
2003   Jan 25 24
2003   Jan 1 35
2002   Nov 27 27
2002   Oct 31/2002 Toolbar PR & BL Update:
Toolbar PR & BL Update.
 TBPR & BL Update 35
2002   Sept 26/2002 TBPR, GDPR & BL Update:
Toolbar PR, Google Directory PR & Backlink Update.
 TBPR GDPR & BL Update 36
2002   Aug 21/2002 TBPR, GDPR & BL Update:
Toolbar PR, Google Directory PR & Backlink Update.
 TBPR GDPR & BL Update 27
2002   July 25/2002 Toolbar PR & BL Update:
Toolbar PR & BL Update.
 TBPR & BL Update 32
2002   Jun 23/2002 Toolbar PR & BL Update:
Toolbar PR & BL Update.
 TBPR & BL Update 30
2002   May 24 29
2002   Apr 25 19
2002   Apr 6 45
2002   Feb 20 26
2002   Jan 25 29
2001   Dec 27 32
2001   Nov 25 28
2001   Oct 28 42
2001   Sept 16 28
2001   Aug 19 31
2001   Jul 19 30
2001   Jun 22 32
2001   May 21 28
2001   Apr 23 28
2001   Mar 26 35
2001   Feb 19 29
2001   Jan 21 33
2000   Dec 19 31
2000   Nov 18 27
2000   Oct 22 54
2000   Aug 29 34
2000   Jul 26 Unknown

Page Rank terminology
PageRank is a link analysis algorithm that assigns a numerical weighting to each element of a hyperlinked set of documents, such as the World Wide Web, with the purpose of "measuring" its relative importance within the set. The algorithm may be applied to any collection of entities with reciprocal quotations and references. The numerical weight that it assigns to any given element E is also called the PageRank of E and denoted by PR(E).
The name PageRank is a trademark of Google. The PageRank process has been patented (U.S. Patent 6,285,999 ). The patent is not assigned to Google but to Stanford University.


  

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