What about log files?

When a a visitor requests to view a web page from a web site, information about the request is automatically stored in a log file. Log files are used to assess network traffic and to understand how content is being viewed on a web site.

A log file includes the name of the domain accessing the Internet (e.g., "company.com," "school.edu," or "agency.gov"), the Internet Protocol Number (IP Address) of the computer making the contact, the time and date of the request, and the type of web browser being used. Log files do not contain the visitor's name or e-mail address. Our IP address may be used to gather broad demographic information only.