An Excerpt from Google Engineer Matt Cutts
Search Engine Optimization Nov 16, 2011

Google algorithm changes
I have been emphasizing ‘CONTENT‘ for years, I’m glad to see that Google is making some headway in ranking the value of page content.
Here is Matt Cutts’ excerpt:
Snippets with more page content and less header or menu content: This change helps us select more relevant text for use in snippets. As we improve our understanding of web page structure, we are now more likely to pick text from the actual page content, and less likely to use text that is part of a header or menu.
Better page titles in search results by de-duplicating boilerplate anchors
We consider several signals when generating a page’s title. One signal is the anchor text in links pointing to the page. We found that boilerplate links with duplicated anchor text are less relevant, so we are placing less emphasis on them. The result is more relevant titles that are specific to the page’s content or video.