hashed user IDs [was: Re: Security of the gpg private keyring?]

[Daniel Kahn Gillmor]

On 03/01/2011 08:05 PM, MFPA wrote:
> My analogy, admittedly not a direct comparison, would be having a
> phone number that is ex-directory. It is no defence against random
> dialling, nor against your number being recorded from outgoing calls
> if you don't take steps such as withholding the CLI, nor against
> somebody who has your number passing it on without your permission.
> Despite these failings there is still benefit in being ex-directory.

What are those benefits?  Are they worth the tradeoff of having a large
number of non-human-readable User IDs?

	--dkg

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