I've found out that FLOSS Manuals writes their manuals using a method called "book sprint". They collect a group of experts, sit them down, and declare that they have 3 or 5 days to write the manual. Apparently it's some agile way to documentation.
They also claim it works for non-technical literature, too.
They did an EU project on it:
http://booksprints-for-ict-research.eu/index.html%3Fp=26.html"On Book Sprints" describes the whole process, look for the patterns section.
What do you think? Is this a good idea?
