If you did write a "markdown over http" spec and implemented a browser for it, it would be about 15 seconds before someone reimplemeted it as a JS library. In

If you did write a "markdown over http" spec and implemented a browser for it, it would be about 15 seconds before someone reimplemeted it as a JS library. In fact, if I was trying to build "markdown over http" I'd start with the JS library. Skip the native browser application entirely.