Interactive Web journal or diary, the contents of which are posted online where they are viewable by some or all individuals. The act of updating a blog is called “blogging.” A person who keeps a blog is referred to as a “blogger.” The term was created by combining “web” and “log.”

A file on a computer or other electronic device that records user information when visiting a website. Cookies are often used to identify the websites that the device has visited, save login information and customization preferences, and enable the presentation of more personalized information or content.