Everyone involved in mail art should read the article 'Ch-ch-ch-ch-change (and Face the Strange) in Mail Art', by Vittore Baroni, starting on page 68 of the Mail Art 1988-2008 Overview book! Also should do the ones with their heads full of nostalgia who forget to look forward. And the people who always want the newest gadgets and forget to look backward.
(And no, I am not Vittore Baroni and No, I did not write or edit the book and do Not work for Lulu). (Yes I'm a young-old person, something 'between generations' or something like that... somehow in crisis??)