Chris Klug, Creative Director for Stargate Worlds, has posted an article talking about the art of writing for MMO titles. In the first of what appears to be an ongoing series of Diaries, Klug talks about how he goes about writing for Stargate Worlds whilst keeping in mind the already-established lore.
I know for certain that structure - not dialogue - is the most important job the writer has as well as his or her primary responsibility, and this job is so important that it eclipses almost every other thing the individual has to do.
Along with that, the article features two exclusive pieces of concept art from the up coming CME MMO, Stargate Worlds.
You can read the full article here