A cookie is a very small text file stored on your computer. It is used to remember and your choices on the website. Cookies are a great way for websites to save important information and settings to make it easier for you as a user.
For example, when you last were there, what you wrote in a form so you do not have to write again, what choices you have made and so on. Cookies can not contain code and therefore you do not need to worry about advertising, spyware, viruses or the like.
Cookies do not significantly bother your system. Only the website is the saved text file that can read it, so nobody else can tell what you’ve done with us.