This advice seems to mimic much of what's in _Style: Towards Clarity and Grace_, which I found out about from Richard Gabriel (achievement unlocked: LISP connection) and which is probably the most hacker-friendly writing book ever written.
Style: Toward Clarity and Grace
Style: Lessons in Clarity and Grace
Style: The Basics of Clarity and Grace
I can't speak to the first 2, but I purchased the 3rd and found it to be excellent.
There should be a startup in here. Paste bad writing in. Get good writing out. Improve income by 30%.
Post: http://matt.might.net/articles/shell-scripts-for-passive-voi...
HN discussion: http://news.ycombinator.com/item?id=1529166
All great, and I liked the book quite a lot. However, the publisher decided to max out on the book's popularity. First, there were quickly about 4-6 (slightly different) versions of it in print, all at the same time. Second, they would release a new version of the main edition (Style: Toward Clarity and Grace) every year. Once they realized it was a textbook, the price leapt up and up. I suppose it's just supply and demand, but it made it very hard to get students to buy the book (once it went from $10 or $12 to $35), if it was recommended and not required.
tl;dr Buy the 1995 edition for $8.93 on Amazon, not the 10th edition for $35. I'm reasonably confident that the essential advice and meat of the book is the same.