We use Google Analytics to gain information about how our site is used. You can learn more about the kind of information Google gathers, and what they do with it on this Google Analytics Privacy and Terms page. This has the potential to give us the kind of information that will help us to provide more useful content, etc.
If you don’t like the gathering and use of this kind of information, please consider enabling the “Do Not Track” features in your browser, and install blocking software like AdBlock Plus, uBlock Origin [Firefox|Chrome], Ghostery, No Script, or Disconnect. Here is a comparison of different anti-tracking tools that might help you to determine which one would be best for you.
If this kind of stuff keeps you up late at night, you should probably be searching the Web with DuckDuckGo, and you might want to switch operating systems to TAILS. But, really maybe you shouldn’t be on the Internet. Just sayin’. 😉