I was similar to this. Wrote in Markdown, eventually ended up in Google Docs. But kept my source in markdown. You can use Pandoc to generate PDF's then send ou

I was similar to this. Wrote in Markdown, eventually ended up in Google Docs. But kept my source in markdown. You can use Pandoc to generate PDF's then send out pdfs via Google Drive so people can comment and add suggestions. This was really useful for proofing, but having to pull up two screens and make changes to source instead of the annotated version was a bit painful.