Social network for user-generated data

[landor]

How about a social network whose vertices are user-generated data objects (e.g. math article, jpeg image) and whose connections are based on request and confirmation between users? I.e. the user who owns vertex A can request a connection between vertex A and vertex B; the connection is established if the user who owns vertex B accepts. (Furthermore, either user can terminate an established connection at any time.) The key difference between this and the graph whose vertices are web pages and whose connections are hyperlinks is that a hyperlink doesn’t require confirmation by the target.

 

[KrisOhn]

Seems like a lot of work to share small things. Facebook can do something similar, where instead of people accepting the request to share information, they can choose to block it.