Set date for signature to expire

[Anonymous]

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> Your are mixing up two things: The statement that you checked the
> owneership of the key at a certain date and how far you trust the
> owner of the key to implement decent keymanagment abilities.
I know that the OpenPGP group has taken great pains to not define trust. It 
leaves trust to be defined by the user and/or the application.
That said a signature on a key  can be one of two things, depending on 
perspective.
#1. A satement that you have checked the ownership of the key at the 
indicated time.
OR
#2. A statement that you trust that the UID accurately reflects the true 
ownership of the key.

Both have the same meaning as far as ownership checks, as i would not trust 
that the UID reflects the true ownership of the key well enough to sign it 
unless i have verified identity. However the second one does have a 
reasonable reason for signature expiration.
Both are reasonable, and I suspect that many people take the second view, 
even if the first view is the official one.

> Salam-Shalom,
>
>   Werner