monkeysphere subkey-to-ssh-agent should help the user distinguish between multiple subkeys
if the user has multiple subkeys, and does @monkeysphere subkey-to-ssh-agent@, they get prompted for each passphrase in succession.
The passphrase prompt tries to show only human-readable info -- in particular, it shows the primary User ID of the associated secret key.
This is confusing for people with two keys with the same User ID.
However, i don't want to start showing the user unintelligible things like fingerprints. Maybe the prompt could include the timestamp of the subkey creation as a distinguishing element to make it more "real-world" understandable?
(from redmine: created on 2011-03-24)