Google Analytics is a piece of software that grabs data about our visitors. It’s something like an advanced server log.
The tracking information allows us to better understand the kind of people who come to the site and what content they’re reading. This allows us to make better decisions about design and writing.
Occasionally we'll compile aggregate statistics about the number of visitors this site receives and browsers being used. No personally identifying data is included in this type of reporting.
All of this activity falls within the bounds of the Google Analytics Terms of Service.