Here’s a nice article on SEO, which lists the “durable” seo elements to focus on for your website:
An interesting revelation from Google CEO Eric Schmidt – google changes their search algorithm a little bit each day. EACH DAY! So jumping onto the latest hot SEO tip may backfire.
I’d summarize this article as follows – make your site user friendly and provide great content. That’s it. Serve your constituency well, and the search engines will reward you.