On the heels of Facebook’s 10th anniversary, reports circulated about how to find out your Facebook ID, the specific number that was assigned to you when you first joined the site. If you signed up early on, it’s likely a much lower number than if you became a member a year ago
Soon after, users of course started updating their statuses with claims like “I was the 900,001st user to join Facebook. How about you?”
But your Facebook ID number doesn’t exactly mean what you think it does.