This is an outstanding article, full of great advice. The author (Jill Whelan) is a long time search engine optimizer whose advice I’ve followed for years with success. I trust her advice over that of many, many other people.
* The majority of the site will be static, as static pages are easier for search engines to crawl and rank properly.
‘Fraid not. Dynamic pages are just as easy to crawl and rank as static pages. Most websites today are dynamic because they’re simply easier to maintain. The search engines have figured out how to crawl and rank them just fine for many, many years now. It’s true that there are specific things you need to watch out for when creating a dynamic site, but most developers are aware of the worst of the issues. You certainly should consult with an SEO if you’re changing content management systems, or if you’re having problems getting your dynamic URLs spidered and indexed. But there’s no reason to have only static pages on your site because you’re worried about the search engines being able to index dynamic pages.
Full story at http://www.highrankings.com/advisor/not-important-to-seo/