Marcia - 5:13 am on Jan 23, 2008 (gmt 0)

That number of repetitions isn't really necessary, especially for long-tail KW phrases. And the original page might retain link juice, but now the PR for the site is getting more diluted so you have to figure whether there's enough aggregate PR for the site to be able to support more pages, and take a guess at how many more.

perhaps losing some LSI in the process, or discover more LSI for the "blue widgets"

What's that got to do with LSI?