What is a HTTP cookie?
A HTTP cookie is a little data-piece that is sent from a website and stored in the web browser of the user while he/she is browsing that site. The HTTP cookie is also called a cookie, web cookie or browser cookie. Each time the user is loading the website, the browser sends the cookie to the server to inform the website of the user's last activity. Some of these cookies are necessary because otherwise the site is unable to function properly. Other cookies are favorable for the user: they relate to one's username and password safety as well as language preferences, for example. With cookies, one does not have to fill out the same information every time one visits a website.