Granular permissions between private and public spaces is a hard problem to solve, as this blog post shows.

A few years ago, Apple acquired Color Labs, who were trying to solve the ‘share with contacts based on an ‘elastic social graph’. These days, I imagine this kind of problem being solved by Bonfire.

I wanted to share the pics and videos with the people I know, so they too can see (if they like) the awesome event that I just went to.

But I had a problem that was recurring for a while, that is how to share different photos with the different connections that I have. There are photos that I can share publicly, and there are photos that I don’t want some people to see, such as my students, acquaintances, and work-related colleagues,

Source: The rings of share – the unsolved problem of sharing | Rukshan’s Blog