As any user can change the password for the shared Jabber account, and it
globally seems that XMPP causes more harm than good in our case, let's now use
the #tails IRC chan on oftc.net, with a randomized nick made of:

- a random firstname picked from the 2000 most registered by the
  U.S. social security administration in the 70s;
- a random number between 1 and 9.