Since Google controls a vast amount of data, it knows the specific information about every active internet user. Google knows who you are— isn't that a bit exaggerated? Well, for many webmasters, this is not an exaggeration at all.
Let me use myself as an example. Since I use Gmail, Google knows what I usually discuss with my friends and colleagues. Based on this information, Google even places ads within my Gmail emails. Google also knows who I frequently contact.
Since I use Gtalk, Google knows who I chat with and what we talk about. Fortunately, it seems Google doesn’t yet have accurate voice analysis software; otherwise, it would know the content of my voice chats too.
I use Google AdWords, so Google knows my credit card number, the name and address registered on my credit card.
Since I use Google AdSense, Google also knows my real name and full address. Once Google starts paying Singapore AdSense users via bank transfer, it will also know my bank account number.
I often use Google search. The validity period of Google's cookies can last for decades, so Google knows that I usually search for English content and am interested in web servers, website design, and programming. Recently, I've also been searching in Chinese. Since June 2006, I've shown particular interest in pregnancy and childbirth.
No matter which Google service I use, my IP address tells Google that I mostly live in Beijing but occasionally spend a few weeks in the U.S.
I use Google Sitemaps, so Google knows most of the websites I manage.
Google is a domain registrar, so it knows which domains I own, which ones are operational, and which ones are just reserved.
I use the Google Toolbar, so it’s very likely that Google also knows my computer’s operating system, browser, brand, etc.
Google knows how many computers I use, and all of them were purchased from Dell. My wife also uses Gmail, so Google knows that I have a close relationship with a female colleague named Nime, and we often share multiple computers.
... ...
Isn't it amazing?
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