What is unique about google's methodology for capturing customer information? and what is your opinion about the process?

Google’s process for capturing customer information is
unique because unlike traditional data collection techniques it does not rely on direct
customer input. Traditional techniques rely on the customer entering their information
which is subsequently stored in a database for later use. Google on the other hand uses
a complex set of algorithms and data collection “bots” that can track a user’s general
internet activity. Anytime you log onto your Gmail (Google mail) or search the web,
Google is able to track and aggregate your searches. Complex algorithms crunch this
information and are able to discern, approximate and predict habits based on user
activity. This helps Google tailor their products to better meet consumer needs and
requirement and keep them in tune with customer behavior.