1. Most word processors have revision control and multi-author options. They even allow comments etc. 2. You have all kinds of open formats such as MS Word, RT

1. Most word processors have revision control and multi-author options. They even allow comments etc. 2. You have all kinds of open formats such as MS Word, RTF, OpenOffice, that can basically export to anything you want. The only reason I do see is that you can use the tools that you already know, such as code version control and your code editor. But other than that, it seems strange to try to do this thing in plain text files. Because then you have all these problems that shouldn't be problems in the first place.