[Toadling]

FWIW, I do all my writing in the excellent BBEdit. It's a plain text editor, but like sylvaticus mentioned, writing and design are two different tasks. I like the separation.

Besides, virtually all of my writing gets published to the web anyway, so having it as plain text in BBEdit makes it all the easier to add markup later on (in fact, BBEdit excels at this).

I'll also throw in a plug for OmniOutliner. Like sylvaticus, I tend to think hierarchically and love how easy it is to "pour" out ideas with OO. I'm often torn between BBEdit and OmniOutliner when choosing a tool at the beginning of a project. I guess that's a good problem to have though. :-)

-Dennis