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Google data centers represent different locations where google is keeping their servers for protecting their system from possible overloading. In others words, a user from Romania will be served by a different server that a user from California, even they type the same url of http://www.google.com !!!How come they do this?! By entering www.any-domain-name.com into your web browser will take you to one IP address. (www.any-domain-name.com representthe domain name, the address of the website , and the IP address,represent the physical adress of a real computer. [Actually every computer on the internet has an IP address, including yours, but not every computer must to have a domain name pointed on it's IP, but this is another story! ] )
How do you see what’s your current google data center?!Very simple! Just click on Start —> Run -> write : “command”(without “” of course and write down ping www.google.com in the black screen that’s appearing. You will be able to see the IP address of yourcurent google data center.
Sweet.
Why should I care about using different Google data centers?!
Some datacenters are updating faster then others, some data centers may contain different results from others, some data centers have “fresh meal” , so Search Engine Optimizers can quickly see more the results of their efforts.
How do I set up my default Google data center?!
Now, you will only edit your HOST file!
In Windows 98 the file resides in C:\Windows\hosts
In Windows XP it is in C:\WINDOWS\SYSTEM32\DRIVERS\etc\hosts
So if you have Windows XP, go to Start —> Run , and write down this :”notepad C:\WINDOWS\SYSTEM32\DRIVERS\etc\hosts ” and press enter!
Okay, now add this lines on the end of HOSTS file:
216.239.53.104 google.com
216.239.53.104 www.google.com
Now go to , Start —> Run , write : “command” (without “” !!!) ,and press enter! write down ping www.google.com and press enter.You will see that the returned IP it’s 216.239.53.104.
You may now delete those 2 lines, and replace them with :
66.102.9.104 google.com
66.102.9.104 www.google.com
Now ping again the www.google.com and see what IP you have.
Now let’s pass in something more advanced, maybe you will want to change the google datacenters 100 times a day , so you may wish to add some virtual domain names , like :
216.239.51.104 result1.google.com
216.239.57.104 result2.google.com
216.239.59.104 result3.google.com
216.239.51.104 www.result1.google.com
216.239.57.104 www.result2.google.com
216.239.59.104 www.result3.google.com
Try to access result1.google.com in your web browser to see about whatI am talking about , and result2.google.com , etc , you may also ping them.
Here is a cool list of Google data centers you may wish to add :
216.239.37.99
216.239.39.104
216.239.51.104
216.239.51.105
216.239.51.147
216.239.53.104
216.239.57.98
216.239.57.99
216.239.57.104
216.239.57.105
216.239.59.99
216.239.59.104
66.102.7.99
66.102.7.104
66.102.7.147
66.102.9.104
66.102.9.99
66.102.11.99
66.102.11.104
66.249.93.99
66.249.93.104
64.233.179.99
64.233.179.104
Just add them one by one, and call them however you want.
For Example :
66.102.9.104 www.google.asiaengine.com /// if you wish so
66.102.9.104 google.asiaengine.com
Feel free to also modify the hosts files for others domain names asweel.
The host file may also help you to access your web server while you didsome DNS chanes (You won’t nead to wait for those 48 hours)
For example, if I changed my www.asiaengine.com to anather hostingprovider, that are hosting my websites on websites on : 209.188.92.116 I will do :
209.188.92.116 www.asiaengine.com
209.188.92.116 www.asiaengine.com

Google has come up with their last page rank update of the year 2008 today! Unlike their previous PR updates, this time around Google has been more or less soft on most domain main (or home) pages as many of them retained or even improved their ranks. Hence the PR update this time has been a good New Year gift for many a blogger.

Google PR update is really something that most bloggers and webmasters look forward to and dread about. PR essentially means money and visibility for bloggers (Perhaps it means nothing for the common - today when I searched the All-Acronyms site for the short-form PR, I was surprised to learn that it didn’t exist there amongst 344 possible definitions for PR. I, in fact, submitted it there immediately). Anyway, as for D$, there was no change in the homepage PR, though I was expecting a PR4 this time. But as I maintained earlier, one has to dig into more details than just the home page PR.
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