The problem with that is your friends indirectly tell Facebook. Facebook can fill in the rest.
The only reason I actually use facebook at all is for party invites, if my friends could find a different way to wrangle party invitations I'd dump my account like it was myspace in 2007.
Also known as the Randi Conundrum.
http://www.nydailynews.com/news/national/randi-zuckerberg-be...