HuskyPup - 12:02 pm on Jul 30, 2010 (gmt 0)
and the information doesn't change on a regular basis,
My sites are evergreen as well and it had been 10 years since I had last SEO'd one of my main sites. In those days it was easy to rank well however I decided to check every page, tweak, adjust and generally bring the pages up to the latest best possible practices.
It's actually been a BIG task, something I thought that may last a couple of weeks has actually taken a couple of months however the results have been startling. Virtually every page is now back ranking #1 not only in Google and Bing but also in Yahoo! where I had always had problems.
The site structure and images have not changed whatsoever, I simply started with the titlebars and ensured they were even more accurate than ever, meta keywords, yep I still do those, meta descriptions, changed the h1 and h3 to ensure it matched the titlebar, made sure all images had completed alt and title information, added synonyms where applicable, I also put these in the meta keywords, plus extra technical descriptions which were also reflected in the meta description.
Like you I didn't really think anything much needed doing however the results speak for themselves.