This option lets you be visible on the fediverse. This way, users of fediverse services (such as Mastodon or Pleroma) will be able to find and follow your account at %{username}@%{host}.<br>When the box below is checked, everytime you add a book to your inventory, your followers on the fediverse will receive an automatically generated message about that book.<br>This concerns only publicly visible books.<br>To prevent sending too many messages, when several books are added at about the same time, only one summarymessage will be sent.