Writing great documentation: technical style
http://jacobian.org/writing/great-documentation/technical-style/

The focus is technical documentations, but the style rules are applicable to all web writing.

yAuthor.com is an on-line service with authoring tools allowing authors to create professionally looking interactive content easily. preview release

Outil de création de contenu en ligne. Très bien fait.

yAuthor.com is an on-line service with authoring tools allowing authors to create professionally looking interactive content easily.

professionally looking interactive content

A great essay on writing, especially large projects.

"There’s a painful threshold when you’re roughly two-thirds of the way through the book where you need an extra shove. My advice is to not write an article about this experience, but rather print out the whole damned book. That’s right. Every single page. If you haven’t already invested in a home laser printer, now is the time. You’re almost an author, dammit. Seeing all of your work spread out on the floor of your office is cathartic."

A great essay on writing, especially large projects.