One Big Issue for me, when I search with several keywords in India, my site is listed within top 100 positions of google.com and google.co.in but my client couldn’t see these results when he checked with google.com in US. How did this happen? What is the actual reason? My site is hosted from US.

Please answer me if you know anything about this crisis....

maybe its just different data centers...

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Yes! DataCenter could be the reason behind it. Actually, there are many Google DCs and it could be the possibility that your client was searching on different DC. Why don't you send them snapshots for proof.

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Neuro SEO Services : SEO Services

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Well, No doubt it is Google Data Centers effect, now the question is "How and Why"

Google is using IP based content delivery for SERP, thats why the results are different on different locations.

I prefer to use anonymous proxy website for checking your rank, like www.zend2.com etc.

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