A text-to-HTML conversion tool for web writers
Markdown syntax allows you to write using an easy-to-read, easy-to-write plain text format.
Markdown for WordPress and bbPress (Markdown-WPBB) is based on the famed PHP Markdown Extra by Michel Fortin, in turn based on the original Perl version by John Gruber. All I did was make the same package work with bbPress too. ^^