Automatic Markdownification of new notes into nvALT is one of the applications coolest features and the one I always forget about. Thanks to Gabe for this reminder. Click through to his blog for screen shots for visual cues.
In Case You Forgot, NVAlt is Awesome « Macdrifter:
Copy a URL and switch back to NVAlt. Hit shift-cmd-V to paste as a new note. The source is downloaded into a new note and Markdown-ified.