In case you have missed the announcement, Elfling has moved from Yahoo Groups to a new location, and will no longer function as a mailing list, but as a forum. According to David Salo Yahoo has changed the environment which makes it impossible to administer and moderate the mailing list effectively.
The new link is below - you'll have to re-register.
Olga García Sep 13, 2013 (16:13)
Tamas Ferencz Sep 18, 2013 (13:59)
AJ Nasreddin Sep 18, 2013 (20:47)