Isn't it better to use something like my https://html-notepad.com where you can just create/edit your document in WYSIWYG and use Markdown as one of input options? (Markdown is coming there).
there are many online services that allow users to 'edit' their content snippets (eg blog posts/etc). So these users are not expected author their content offline.
In those cases, having an online editor and an rendering engine that supports something like markdown, is beneficial.
