My personal and the opinion of our internet specialists is that the so-called "Social Media" hype actually is a gigantic and asocial surveillance apparatus and that we should stay away from it.
However, some of our friends maintain e.g. What's Up (WhatsApp) or facebook groups and you can find links here.
WhatsApp Gruppe "Heilreisen" - Moderator: Sandra
(contact +49-(0)163-898-7401 via whatsapp to get subscribed to the group)
N.B.: If you join such networks like facebook, it is entirely your own responsibility to maintain internet security.