This is kind of cool that there's actually a site that can predict of what does Google do... do you think they have someone inside Google XD I'm not sure if this is a reliable source though...
Code:
Page Rank Export List History TablePR/BL Estimations: Average days between the last 5 exports.
Year Date Info Days
2007 Waiting TBPR Export Estimation Jul 21 72
2007 Waiting GDPR Export Estimation Mar 19/06 568
2007 Apr 30 TBPR Export: Toolbar Pagerank Export.
Forum coverage:
http://forums.searchenginewatch.com/showthread.php?t=17370
Estimated Apr 15/2007 Apr 30 TBPR & BL Export 98/98
2007 Jan 25 Algorithm Update: Algorithm Update.
Forum coverage:
http://www.mattcutts.com/blog/algorithm-to-reduce-googlebomb-impact/
http://googlewebmastercentral.blogspot.com/2007/01/quick-word-about-googlebombs.html Jan 25 Algo update - Reduce Googlebomb Impact
2007 Jan 25 TBPR Export: Toolbar Pagerank Export.
Forum coverage:
http://forums.digitalpoint.com/showthread.php?t=231584
Estimated Jan 28/2007 Jan 25 TBPR & BL Export 18/18
2007 Jan 10 TBPR & BL Export: Toolbar Pagerank & BL Export.
Forum coverage:
http://www.mattcutts.com/blog/infrastructure-status-january-2007/
Estimated Jan 28/2007 Jan 10 TBPR & BL Export 101/101
2006 Sep 28 TBPR & BL Export: Toolbar Pagerank & BL Export.
Forum coverage:
http://forums.digitalpoint.com/showthread.php?t=148674
http://www.mattcutts.com/blog/new-toolbar-pageranks-visible/
Estimated Oct 11/2006 Sep 28 TBPR & BL Export 76/76
Page Rank Update or Export List History - PageRank - PR