This: "The audiences that Di Petta and Cameron have built are created with the work of photographers who they don't pay or even credit . They don't provide sources for the photographs or the captions that accompany them. Sometimes they get stuff wrong and/or post copyrighted photographs. " Combined with this: "I'm sure the majority of photographers would be glad to have their work seen by the massives." Nothing 'new…
> Theft plain and simple. Well, no, not plain and simple. At the worst, it's copyright infringement. You may think this is a pedantic correction, and from your point of view, maybe it is. But it isn't for people who see intellectual property as unjust.
One other angle on this, for the "steal absolutely must deprive someone of something" view, well - something is actually lost, that cannot be replaced. The right of the IP creator to be repaid by the person who grabbed it. Many people say "Well, I'd never have bought it anyway". Whilst true for now, would it still be true in 1 year? 5? 10? Would you have bought it for your kids, or because a sequel came out that you do want to buy? By taking it, you rob the person of the ability to sell it to you in the future.
I think it's incumbent upon anyone who thinks "intellectual property is unjust" and who acts on this belief by just denying its existence, to propose and get support for a viable alternative for supporting the millions of people who depend on it for their livelihood. Otherwise, you're just an anarchist, burning the system down and denying any contribution to the people who have committed to a certain lifestyle on the guarantees currently provided by society.