Just a quick note that some people are making noise about Markdown standardisation.  Specifically:

  * <http://markdown.github.com/>
  * <http://www.codinghorror.com/blog/2012/10/the-future-of-markdown.html>
  * <http://johnmacfarlane.net/babelmark2/faq.html#what-are-some-big-questions-that-the-markdown-spec-does-not-answer>

It might be worth following...