Has anyone done any tests with html5 and Google ranking recently... specifically use of the <nav> element?
I ask because I recently started using html5 doctype, however, have yet to really take advantage of any of the new markup. Also, I previously made a change to my main navigation which of course is sitewide. Immediately following that I was gone from rankings essentially.
The thought popped into my head that perhaps these 'signals' could be used in conjunction with other algos.