Postmedia Network Canada Corp. has stated a $36-million loss in the last quarter because of the weak advertising market. Postmedia, which publishes newspapers in several Canadian cities, has been trying to get into the black for years. The thrust has been to increase digital revenue. Postmedia is perhaps the most vulnerable of all the Toronto daily publications — including the Globe and Mail and the Toronto Star — which face the 21st Century digital newspaper curse. For many years, analysts have predicted a rationalization of this business which would see fewer daily papers in Toronto.