Classmates are considered "missing" if they have not joined the site.  We have numerous bits and pieces of information on almost all members, but if we cannot mail an invitation to your home, we are going to consider your information incomplete. Until this website allows us to differentiate between truly "missing", meaning we cannot find a classmate at all, and "missing information", AND differentiate classmates who have joined the site versus those who have not, these classmates will all show up on the same page.