Micro-Formats and SEO

[John Gronley]

I was reading an article on hyperlinks and they discussed micro-formats. Below is the excerpt from the article. Do these have much impact on SEO? Should these be used with title tags or in place of? what does this do to the code to text ratio?

Thanks,

John

MICRO-FORMATS
As the Web becomes more semantic, consider incorporating micro-formats into your link structures, to help machines understand how a link fits into a page and its relationship to other pages. For example, the following…
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<a href="http://myfriend.example.com" rel="friend met">My Friend</a>
tells search bots that this text links to a friend who I’ve met, which is useful for discovering connections between links. You can also read more about micro-formats.