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Anyone has seen it and figured it out?
Acouple of my own pages are still oscillating a bit between 4 and 5 but with a tendency to stay on 4, their old value.
Maybe I should begin saying "mojn". It literally means "good morning" in a certain danish dialect, but the locals use it all the day for both "howdoyoudo" and "goodbye".
At dance time, PR displayed tends to fluctuate between the old and new value. My guess is the DMOZ will be PR10 again.
- PageRank toolbar queries get done via HTTP protocol to a server called toolbarqueries.google.com.
- There are six DNS records for this address that round robin as follows:
126.96.36.199 (Verio co-lo in VA?), 188.8.131.52 (Google Palo Alto?), 184.108.40.206 (Exodus co-lo in Santa Clara?), 220.127.116.11 (Exadus co-lo in Washington DC?) and 18.104.22.168 (Exodus co-lo in Washington DC?). The locations are best guesses based on traceroute names.
- I presume that there is a load balancing server farm behind each IP address at each data center.
The PageRank for my site is changing based on which data center it queries, but even then it is not 100% consistent. Right now my site has a PageRank of 5 at three of the data centers most of the time, and 3 (It's old rank) at two of the data centers 100% consistently. I presume the mixed results even at a single data center are the result of unfinished replication to the server farm.
I assume that the database updates are orginated at Google's HQ in Mountain View (Or maybe they have a data center in Palo Alto?) and then replicate to remote sites. It looks like the colocation sites in California get updated before the sites in Washington. I imagine they have a lot of data to move when this happens.
Anyway that is what I think may be going on behind the sceens. I could be wrong...
So in summary, I think the PageRank toolbar is accurate, to the extent that someone who is searching Google is getting that view of your site and the old database. Testing it five times (by hitting forward/backward) should give you a fairly good view (but not 100%). Until you get consistent PageRank results, it shows that old data still exists out in Google's search database for some subset of users.