I guess we should deactivate this entry.
I think that cataloging "private" releases in digital form is going too far, as there are hundreds of this kind we don't even know about (and probably never will).
I am also agree that is not really helpfull to the database and their users as this kind of private gifts are unique.
For me this is different to "composers' gifts/review only" CDs like
this or
this because i have seen these CDs for sale on Ebay at least. While such digital releases won't be available anywhere unless they are released officially.