Scavenger Hunt Rush

Today in class, we had a scavenger hunt to look for information on many things. A quick glance at the sheet made it seem impossible to find any of the information. However, Andrew Fry says that it will be possible. so we searched for information in groups of three and lo and behold, every little thing that was on the sheet had information for us to find about the subject matter. Even the married sur name of someone's middle sister! However, when we think about this a little bit more... when we forget our passwords, some of the questions are "What is your mother's maiden name?" or "What city were you born in?" how hard is it to look up those information online? Should we be using these questions to retrieve our password? If it's this easy for someone to look up information about anyone, should this system be improved?