Planet13 - 2:51 pm on Jul 2, 2013 (gmt 0)
The search volume for a particular keyword combination could also be a factor. If you direct most of your internal "link juice" to pages that target high volume search terms, that would be a form of over-optimization.
Thanks for mentioning that. I think that is a good point.
In MY particular case, the keywords "blue widgets" is NOT a particularly high volume keyword, and in MOST cases, google assumes that searches for that keyword are for information more than purchases (at least as far as I can tell).
So the problem might be that I am linking FROM informational pages to my (same site) ecommerce page.