tedster - 4:10 pm on Jul 19, 2010 (gmt 0) [edited by: tedster at 6:36 pm (utc) on Jul 19, 2010]
I mentioned phrase-based indexing as just one example of how complex things have become, and not as "use this idea to automate your writing". I'd probably go more with natural expansion of the vocabulary on the page, rather than looking for an automated approach.
Just read your on-page content with this concept in mind and it can remove the shackles that came with old-school "text match" ideas about keywords and ranking. You are free to move about the entire English language, so write naturally what your visitors need to know, move them to respond with your words, and don't have much concern about finding a keyword formula.
[edited by: tedster at 6:36 pm (utc) on Jul 19, 2010]