This happened over a month ago, but a really nice thing to come along was the release of “ PHP Markdown Extra + PHP SmartyPants Typographer Text Filter for MarsEdit .” I still use MarsEdit 1.2.1, well, because I don’t really post enough to justify getting an update. That means some of how this works might be different. But, basically, after you put the folder in ~/Library/Application Support/MarsEdit/TextFilters there is a formatting option to pick the new Markdown and SmartyPants filter. This means that the preview will now be run with a PHP version of SmartyPants , and the enhanced version of PHP Markdown . 1 Blogger doesn’t use Markdown, or SmartyPants, so it has to be converted before being sent. For this, I’ve been using “Translate Markdown to HTML,” from Drew Thaler . 2 This has been updated to 1.0.3 , which I am guessing probably makes the change even easier. In order to get this to work with my newer Markdown and SmartyPants, I changed two lines. The first line, near