Yesterday I re-watched a module in the StomperNet STSE2 video course, and Leslie Rhodie was recommending this optimized 3 column CSS layout.
Optimizing your page HTML order is very important for SEO, to provide search engines the unique content of every page first. This means that if the spiders from the different search engines have a limited amount of time on your site, they will get the unique content of the page first.
I think it is an excellent resource. Great work Matthew.