Cookies in general are absolutely delicious. Unless it's made with Kale.....Yuck! Except we are talking about web cookies silly!
With THESE types of cookies, the three purposes are:
Something that can keep track of where you go on the Internet.
Something that some companies use to find out more about you.
Something you can turn off if you don't want it activated in your browser
The term was first coined by Netscape developer and programmer Lou Montulli after the term "magic cookies" by Unix programmers. A magic cookie is a data packet or token passed between two communication programs.