It might never have been the main eMule discussion platform, but it is not "dead". It will probably survive the www.
In last years Mindforge has lost most of its users. It's a normal thing. Everything changes and now is the time for social networks (Twitter, facebook, etc.). There is no place for old systems.
Emule-Italian and Emule-Spanish had two channels and almost 900-1000 users connected; now there is only one channel for italian and one for spanish with maximum 300 users (on sunday). The other emule help channels are not too crowded.
IMHO there is no reason to keep IRC network (and especially Mindforge, a closed network with very bad rules)