First, the handwritten greeting card fell by the wayside.

Then the email ruled.  But at least it was person to person/persons.

Now Facebook and its cohorts allow mass mailing without any address. 

The sender just makes one entry and in a sort of reverse move, requires ‘recipients’  to come to his/her station – if the price of admission is paid, i.e., registering with Facebook et al.   . 

Progress?