As an academic that writes in Markdown (usually solo, offline), this ticks so many boxes for me. I love that for once I may be able to convince my co-authors to collaborate in Markdown instead of Google Docs. Integration with Dropbox is crucial to accomplish this (most academics use Dropbox), but it is missing one step: IMPORT!<p>It's great to see that I can export to Dropbox, but then how do I roundtrip? Rather than remembering the URL (or copy and pasting from a desktop app), it would be great to be able to load up an existing document from Dropbox, send off a collaboration link, and then have the ability to send the completed (collaboratively written) text back to Dropbox.