Mark-up Plain Text to Valid XHTML
How many times did someone send you a word document complete with numbered paragraphs and ask you to convert to (x)html? It happens to me all the time. Next time I am going to try this on-line as it worked very well on a demo. Daring Fireball: Markdown Web Dingus.
You can also get a markdown perl script here if you want to run it locally or on your site. It appears to be an open source project … but then there is a $50 license fee for commercial work. I don’t quite understand how the two go together. If you do, please leave a comment.