Markdown for taskboy?

Loyal Taskboy Readers,

Markdown is an open source text filter written in God's Own Perl. Even though the taskboy blog is written in PHP, I can shoehorn this fitler into the comment system to allow greater markup. I may write a primate forum for taskboy built on the comment system. Stack Overflow uses this system, which is what brought it to my attention.

I ask you, readers, is it desirable that I add the Markup filter to comments?

UPDATE: Thanks to the Internet's feature of building applications before I need them, I have just run across Markup for PHP.