Our site recognizes you by the cookie that is stored on your computer. If the cookie has been removed from your computer, or if you are using a different computer to access the site, it cannot recognize you because the cookie associated with your personal settings is not there.
We restore your personalized settings for you when you Sign In. You control when and how our web site server remembers you.
If you don't want the site server to remember you, there is an option when you Sign Out to clear the cookie from the computer that you are using at that time.
If you are using a public computer (such as those in schools, public libraries or cyber-cafes) to access the web, always Sign Out and make sure to check the button that says "Do Not Remember Me On This Computer". This will erase the personalization cookie from that computer.
Remember that you can always restore your personalized settings by Signing In again.