Planet13 - 5:35 am on Jul 31, 2011 (gmt 0)
Thanks for the update. You brought up something that i just wanted to expand upon (although I can't say whether it is truly related or not).
My competitor who jumped the rankings with the words All and Every must be deemed all about those words since they are on every page and there is very little other content on them. I'd bet my bottom dollar that his/her GWT account shows those words extremely prominently in importance.
I mentioned this in a thread I started about a week ago. A competitor who dominates for a couple of keywords has the words /widgets/ and the word /dingbats/ in the URL of every product and category page. Even if the products or categories are not related to widgets or dingbats.
And he ranks first for the keywords widgets and dingbats, Despite not being very well optimized for SEO through on page text.
Unless GWT tales account for words that appear in the URL, I don't know if GWT would say these words were the most prominent on his site, either.