This post was published more than a few years ago (on 2008-01-07) and may contain inaccurate technical information, outmoded thoughts, or cringe takes. Proceed at your own risk.
Not sure when they added it (seems like just today), but [Tumblr](http://www.tumblr.com/) has just added Markdown support for posts. Huzzah! My [Rathole](http://rathole.tumblr.com/) tumblog is hosted by Tumbler, and this is just one more reason to love ’em.