This includes internet protocol (IP) addresses, browser type, internet service provider (ISP), referring/exit pages, platform type, date/time stamp, and number of clicks to analyze trends, administer the site, track user's movement in the aggregate, and gather broad demographic information for aggregate use. IP addresses, etc. are not linked to personally identifiable information. We also look to what visitors are searching for so we can write the calculators that our visitors want the most.