Has anyone heard of "FB" Friendshipbook? So you made use of old social networks. This was the way to make new friends through letters, where you put at your disposal your name, address, country etc, so that people know you better, exchanged photos, postcards and sometimes even gifts.It was very cool because new friendships were made, and the letters written were exactly addressed to you, did not have to "copy and paste" as it is today.