Facebook is the most popular social-networking internet site in the world - bigger than Myspace and Bebo.
Around one million new users are signing up every week, making it the fifth most popular website in the world and worth over $15 billon.
For those who have never heard of Facebook, it is a place where users can stay in touch with their friends, promote themselves and even events.
Jedi Thian is the well-known host of the Rugby Roundtable - a popular podcast show for rugby heads - and he is also popular on Facebook.
He seems to collect friends everywhere he goes and he is happy to admit that it has changed his life.
"There are oddles of people out there that want to be my friend," he says. "In this modern age you feel validated."
For some Facebook users, it is all about collecting as many friends as you can. Mr Thian is so popular that he has cracked the 1,000 friends mark.
Pauline Gillespie from the ZM morning crew is another who cannot live without Facebook. She is on both Facebook and Bebo and has over 3,000 friends.
Which New Zealander has the most friends is anyone's guess. Jacque Brown from The Jacqui Brown Diaries has over 1,300 friends, while Target's Brooke Howard-Smith has nearly 1,600.
Helen Clark still has over 2,800 friends, while Prime Minister John Key has nearly 4,900.
Barack Obama seems to be the most popular, with more than three million friends.
Facebook has changed the way many communicate, with some shifting away from email.
And for those not on Facebook, you had better hurry up or you will miss out on the social-networking phenomenon.