For many years, we've asked NAV users to send us a postcard to tell us they use NAV (see: http://metanav.uninett.no/postcard).
Up until now, we've received a total sum of 0 (zero) cards :-(
I just want to send a shout-out and a big thanks to Matěj Grégr, from the University of Brno in the Czech Republic, who recently sent us no less than _two_ postcards :-)
These are now proudly on display on the window facing the hallway outside my office: http://yfrog.com/h8qbqgxj