From the official Twitter page of the Shroud Exposition 2015 maintained by sindone.org of the Diocese of Turin:
You have memories of the previous expositions of
# Shroud ? We will post photos and more meaningful stories, write to firstname.lastname@example.org
(translation by Google)
In other words, if you have been to Turin and seen the shroud, email@example.com wants to hear from you. Send photos.