When creating new accounts on https://wiki.debconf.org/ the new user
should be automatically reminded to put some contact info on his User
https://wiki.debconf.org/wiki/User:Jidanni leads the reader to full contact
https://wiki.debconf.org/wiki?title=User:Kaare&oldid=23284 on the other hand
Why is this important? Well some users might sign up for various things
on the wiki, but we have no way to contact them if there is a change of
plans, and they don't monitor their wiki watchlist.