Social Networking or Stalker Networking?

In 2004 I helped plan my 10 year high school reunion.  It was my job to find physical ane mailing addresses  for the ~200 members of the Morris Hills High School class of 1994. I even subscribed (i.e., paid money) to belong to one of those "classmates" services. (a rip off then as much as a rip off now). Anyway, with my genealogy sleuthing skills, I found about 2/3 of the folks, which was pretty good considering I was two states away. I was disappointed that I couldn't find 100% of the class, but this was before the era of Facebook and MySpace.