http://h2zkj5xeycxb2esnyqeabuuo6ui6jlkdb72qjfi2hu3y3h5ilpmjphid.onion/wiki/Press/2006-11-16/index.html
To register, go to https://penta.debconf.org/user and create an
account on the conference management system. After visiting the
activation URL sent to you by email, go to https://penta.debconf.org/submission/dc7/person and log in, then fill
in at least the 'General', 'Contact' and 'Travel, accommodation and
costs' tabs reachable through the 'Registration details' button on the
bar on the left of the page.