This site, like millions of others, uses Google Analytics. Google helps developers understand how visitors use their site and which pages are most popular.
Google Analytics utilizes “cookies” (small text files stored in your browsers cache) which contain anonymized information. This means no personally identifiable information is stored unless you explicitly submit it to the website.
Google Analytics stores session information, but not personally identifying information. Examples of session information include:
The information collected by Google Analytics is sent straight to Google servers and is only accessible to me through reports. Google manages the technical details relating to the gathering and storing of all analytics information.
Analytics allows me to better understand what content is most popular and how users navigate the site. This helps me make better future design and writing decisions.
All of my activity falls within the bounds of the Google Analytics Terms of Service.
You can find additional information about Google Analytics here