ssh clarification needed

[Joel Rees]

On Jan 5, 2009, at 12:01 AM, Todd Zullinger wrote:

> Kevin Kofler wrote:
>> * authentication keys - those are what you use to log in instead of
>> a password. They're one per user and machine unless you explicitly
>> copy the private key to a different machine or user account
>> (something you normally shouldn't do
>
> I presume you mean only the latter part (copying the private key to
> another user account) is something that you shouldn't do?
>
> I share the same ssh private key between my desktop server and my
> laptop (both as the same user).  I don't see much reason to have two
> separate keys for that.
>

Personally, I might use the same passphrase, but I think I would re- 
generate the keys on each device.