The Personal Settings allow you to set some personal settings.
This is a read only section that provides diagnostic information related to your current logged in session.
User Information For This Site
This is a read only section that provides information related to your user information.
This user information is set by the site administrator and overrides the information in your Assign It To Me account.
This allows you to set the default views when clicking on links to “Assigned To Me”, “Projects, “Directory” and any project.
By default, those links open the Summary tab, but you can force them to open their respective list views by checking the appropriate check boxes.
Personal API Key
This is reserved for future functionality.