psyced supports redirection from one place to another. This can be used to send people away from a discontinued chatroom or even to implement channels by means of multiple aggregated places (but we don't do that yet).
PSYC is also planning to provide a redirect facility for person identifications so that you can migrate your old identity to a new server. Currently we only provide forwarding for that purpose.
The methods used are _failure_redirect_permanent and _failure_redirect_temporary (much like HTTP's 301 and 302).