The page shows a list of information processed when you use Google and a list of reasons why it's processed. Google also explains how it uses data to improve user experience and lets you adjust some privacy controls (account history, ads settings, opt out of Google Analytics data collection). "These features work because of the information you choose to store with Google. But that's up to you. The controls in your Google Account let you decide what information you want Google to put to work on your behalf," informs Google.