sharability

The ease or difficulty to allocate an item or idea

The worthiness of a digital application (apps) for one user to share with another, with interaction between users mandatory for functionality of the app or one of its features. Different from virality, where one user simply passes on information from one source to another user with no interaction required between users whatsoever (sharing a link or image, etc.), however, both measure success with higher numbers from simple seeding(one user shares with others and those new users share with even more, newer users, and so on).

To make a private post public so other people can share it.