Hell this could even be extended, so that guilds once they were a certain size could create "guild newsletters", kind of like a mini paper that contains information pertinent to the guild and they could sell for 1 gold to members (because the messenger system for guild members is already in place). It would give updates to members, create a reason to get into a continent wide guild (cheaper news), and present it in a fun, roleplaying type way.
You could also use the current guild mechanics of grant/fees, create a guild dedicated to a newspaper and publish only to full members.