According to his roommate at the time, Arie Hasit, "he built the site for fun."
"We had books called Face Books, which included the names and pictures of everyone who lived in the student dorms. At first, he built a site and placed two pictures, or pictures of two males and two females. Visitors to the site had to choose who was 'hotter' and according to the votes there would be a ranking."
Gotta give the guy credit. He exponentially monetized the high school experience.
Television king pins used to justify the inanity of commercials by saying, "They underwrite the show." Okay, we accepted that unwritten compact.
Now, in exchange for all our personal information including search words, proclivities, likes, dislikes, politics, financials, private thoughts, all that makes us human and exposed to prosecution and persecution, we get to write inane comments and devalue the terms "friend" and "like".
The value of your personal information to many parties (advertisers, government enforcers, criminals, etc.) stomps like an elephant on your ephemera that lasts forever.
That unwritten contract between the consumer and the Internet will come back to bite you in the ass. Unless, of course, you have some of those magic shares.