Do search engines add weight for microformats?

Question

For example, if I had

<a href="http://www.example.com"&gt;My friend Bill</a>

or

<a href="http://www.example.com" rel="friend">My friend Bill</a>

Will Google for example give extra weight to the second because I specified they are a friend?

Answer 1

According to their webmaster documentation microformats may be used to display additional information in the search results but don't affect the page rank.

http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=99170