This is something I didn't find out until a few days ago. What happens when you search for "new York weather" on google? Find out.
How do you get rid of the annoying irritating useless "personal tabs" in MSN Messenger? It seems like MS does not want you to do that, so they "hid" the option for this under "tools-options-security". Simply check the "this is a public computer so don't show my tabs". I have to wonder if this is a simple usability issue or a little hidden agenda (or both).