Here's a description of how it works I made in a topic awhile back.
Okie dokie fellow family peoplez! Here is a brief explanation on how this works.
The family is just a easy way to make friends and bring people together. Most families are easily made by age and gender. For example. (I will use @WBL Studios , I hope thats alright?)
Since your male and older than me, I could be your son? Or you could be my uncle? You make up roles, some people roleplay them in posts, chat, pm's, others don't. You could be a dog or cat if you like!
Most people advertise their families in their sigs like so..
WBL Studios - Uncle
Really, it's main objective is to just bring people together, make it easier to make and keep friends, plus if you join a family that could be 3+ friends you make just like that.
You don't see it around anymore so much. But as you can tell by my sig I still do it. :P