What does "Remember my Username and Password" mean?
When you sign in using your Username and Password, your browser can "remember" this information. Check the box and you won't have to sign in each time you come back. (Although we may ask you to re-enter your password if you've been away from the computer for too long.)

What if I change my mind?
You can always sign out of your personalized area at any time by clicking the "Log Out" button in the member box "Your settings" . Once you've signed out, you can sign in again and choose whether your browser "remembers" you or not.

Can cookies be used to get a "snap shot" of my hard drive? Is this done? and how?
Cookies cannot be used to get data or view data off your hard drive, early Javascript implementations could allegedly do this. This problem has been plugged along with more serious Java exploits, and no-longer poses any threat. A server can only get data from the cookie it wrote to the cookie file. The server must be on the same domain from which the cookie was set.

Can someone from one site access the cookie information written by another site?
A site can only access a cookie that has been set from its own domain, It cannot access any other cookies from your computer.