[kr99x]

Voluntary removal of one's own information does not, in theory go against the free exchange of ideas, but it's a difficult path to follow. How do you grant removal powers to only the owner of something? If you hold a private key, that's easy enough to work something out. I am completely fine with somebody using a key to put something out there and later using the same key to remove it. It's theirs.

...but that's not always the case. If your information has been copied against your will in a way that removes that key (which is incredibly hard to prevent, see the "analog hole" problem in video DRM), you have to have some sort of central authority or master key to be able to remove it, and then you're again falling right back into trusting that central authority with the power to remove whatever they deem fit. What if the central authority decides you don't own the information and not to remove it? What if they claim ownership of something they want removed that isn't theirs?

It just doesn't work. Information removal is a superpower I do not trust any large organization to wield responsibly.