Is this a new service, or just an article about the existing one (which, last I looked into, charged for access to it)? It's a noble cause, but not very helpful if you have to pay to participate.
PhotoDNA has always been free, though it is limited to "qualifying organizations", which I assume means they want to know who you are and how much traffic you plan to send before they give you access.
It would be interesting to see a couple of those hashes and try to generate perfectly legitimate images with the same hashes.
Any anyone link to a mirror. I am getting DB connection errors can cannot see the content.