The easiest way to keep content fresh on your static pages is to add excerpts and links to the post from your blog once per week or so. Make these links nofollow if you do not want to pass juice back to the blog. Not only will it help for fresh content for Google but will give your visitors fresh content also.
Static site is made once and never updated. On the other hand, dynamic sites are updated frequently based on needed data & input queries. Blogs are more updated version of dynamic sites including user/reader feedbacks. Blogs provide unique, fresh, descriptive data as well as it hooks link juice that all bloggers/writers/SEO-specialists look for. Search engines like link juice and fresh content, and a blog is ideal for those purposes. And Wordpress powers blogs in most extensible ways. It helps blogs create good content, distribute it allover the blogosphere, trackback links, optimize feeds and so on. That's why wordpress blogs rank top in SERP.
Do you mean that often adding fresh content in a static site will be ranked lower than the same content on WordPress?
A static site can be updated, but the information on the page is "inactive". A dynamic site uses scripts to adjust the page to what the user wants, hopefully. A dynamic site does it automatically. I wanted to say that you can choose to do your SEO manually, but why not use software that can do it for you ? That is what software is for.. no ? >>>>To make our lives easier and to give is more time in life to more important things.
Well after reading all the replys here, thanks alot to everyone you've input has been very useful, I've decided to redesign my site to include more dynamic content. The new design has my blog posts and latest forum posts pulled from RSS feeds and then embeded into each page as html. After reading for a while this seemed to be the best way to keep my static pages updating frequently with new relevent content. Theres also some other features such as easy access to feeds from the forum, blog and comments, better horizontal navigation and it's much more aesthetically pleasing. I've got plans to also add comments to most pages. Check out the new design, not fully workig yet but you get the idea. Just have to do the boring bit of ironing out problems and copying the content over. I've also had to rename everything to .php files as my host does not allow php in html and then add 301 redirects to the new urls.
well static websites are horrible but thats not everything your blog generates more content and usually blogs are more search engine friendly so understand the more usefull content you have on your site the better it is and google recognizes that
if you need more information on this type of stuff you should visit www.xpirtdesign.com we have alot of usefull information that can answer these types of questions for you