Study after study has shown that one of the greatest threats to Internet security is the mandated changes to passwords. When passwords are forced to be changed frequently, many people forget them and so they write them down, stick them to the computer screen, email them to themselves, etc. Now Marriott had mandated another password change "to safeguard my information." Good grief! This isn't the CIA or some investment banking site. I wish everyone would quit trying so hard to protect me; I can manage fine by myself.