A referrer or referer is a person, website, or application that directs or refers a user to another website or webpage. This can occur through a hyperlink, search engine result, or other means of navigation. The term “referrer” is often used in web analytics to track the source of website traffic, while “referer” is a misspelling that has become widely accepted in the tech community. In essence, a referrer or referer acts as a guide, leading users to new and relevant content on the internet. Without these referrers, the vast network of interconnected websites and information would be much more difficult to navigate and discover. So next time you click on a link or perform a search, remember to thank the referrer or referer for helping you find your way.