How Google Tracks Your Personal Information

An insider’s account of the dark side of search engine marketing

Today, Google provides marketers like me with so much of your personal data that we can infer more about you from it than from any camera or microphone.

There have never been more opportunities for marketers like me to exploit your data. Today, 40,000 Google search queries are conducted every second. That’s 3.5 billion searches per day, 1.2 trillion searches per year.

When you search on Google, your query travels to a data center, where up to 1,000 computers work together to retrieve the results and send them back to you. This whole process usually happens in less than one-fifth of a second.

Most people don’t realize that while this is going on, an even faster and more mysterious process is happening behind the scenes: An auction is taking place.