HuskyPup - 8:15 pm on Jul 30, 2010 (gmt 0)
Is there a reason you omitted H2 tags?
Yep, when we first built this site using CSS we used h2 within the lhs navigation, not entirely correct however it's worked for us.
A year ago, sitewide tinkering in such sensitive areas would have earned you a series of page-penalties
A few months ago this specific site was coming under pressure from quite a few spammy sites, especially one particular section of it, plus I also noticed formerly well-ranked pages in other sections were losing their previous #1 rankings therefore I decided to really focus the "problem" section and did as described above.
Within a few weeks ALL that section's pages were back to the top in both web and images search hence I took the decision that the entire site needed updating, cleaned-up the coding where necessary and making them even more focussed than before.