I use the Share for Review feature mostly with users who do not have or need Adobe licenses - and for security all documents have to be password protected. Therefore, most of my reviewers are 'guests' and only receive notifications if I reply to something they said. If I add a new comment on my own, or revise text or try to direct their attention to a new Pin, they do not receive any kind of notification. It would be useful if I could tag guest users via their email address and they could get an email. If this is how it works now I cannot seem to get it to work properly.

A general message when the link is updated would also be nice for all users.