It might be good to understand that Facebook was created the same day that the "Defense Advanced Research Projects Agency" (DARPA) did away with (supposedly)a project called LifeLog. That was Feb. 4, 2004. The purpose of LifeLog was to know everything about a person's life and have it all on a digital record for every human being.
I suppose some people began to be a bit nervous about a government agency having all that information, and so it was cancelled. If you believe in coincidences, then no problem that Facebook began the same day. Now instead of the government having to take that information, millions volunteer everything about their lives freely and post it all in a convenient place for the government to collect. Ain't progress grand!