But this raises some questions inside me. Maybe some one can shed some light here.

1. The physical letters that I send to a friend are with my friend. So he is now owner of it and when he dies, it goes to his legal heir. Though I am the one who wrote them. Should it not belong to my heirs since I am the creator ?

2. If we are mapping online to offline equivalents, who inherits the facebook messages ? Is it the sender or receiver ? The messages contain both sent and received items as in discussions.