[1Unreal]

Originally Posted by River_rush

Google announced in early 2005 that hyperlinks with rel="nofollow" attribute[3] would not influence the link target's PageRank. In addition, the Yahoo and Windows Live search engines also respect this tag.[4]

How the attribute is being interpreted differs between the search engines. While some take it literally and do not follow the link to the page being linked to[citation needed], others still "follow" the link to find new web pages for indexing. In the latter case rel="nofollow" actually tells a search engine "Don't score this link" rather than "Don't follow this link." This differs from the meaning of nofollow as used within a robots meta tag, which does tell a search engine: "Do not follow any of the hyperlinks in the body of this document.".

http://en.wikipedia.org/wiki/Nofollow

Thanks for clarifying some stuff there. The pagerank thing is believed by some people, I was sceptical though