Answers are from Facebook on 9/17/09: http://www.facebook.com/press/info.php?statistics
A few million
The first member of facebook was most likely it's main creator, Mark Zuckerberg
Do you mean, "How do you add a family member to your friends on facebook?" Or do you mean, "How do you add family members on your facebook profile, saying 'family'?"
no
You can become a member of the page by liking it.
Search them on google or facebook.
It means "one who uses and is a member of Facebook".
no,it is not worth to be a member of because it is a waste of time for children..
You have to be 13 years old or older to apply for Facebook!
No. However, what you can do on their page is limited.
Yes you can.
Over 14