Whitey - 10:16 pm on Dec 1, 2010 (gmt 0)
-- A nofollow link transfers some AuthorityRank but no PageRank.
-- Mentions of a site name or brand name without a link may also increase AuthorityRank
This has been my non scientific hunch for a long time
If a search engine knows that an authority source restricts it's implemented links with no follows , it may also by implication in this context, use this an an endorsement of the authority that it is passing to the recipient site.
Link juice may not be " followed " through , but other ranking factors may be transferred. I can't believe that Google does not consider this contextual data. In fact , with the abuse [ in Google's eyes ] of paid linking , data like this must surely feed into Google's algorithmn as one of the many factors. Any thoughts ? Fact or fiction ? [webmasterworld.com...]
Google would seem to score pages by various methods of association. Don't confuse this with " link juice" , but i continue to believe no follow links or brand domain name usage can be useful. Social media signals may be part of that overall consideration , stronger or weaker I'd have no idea.
When hearing directly from the source , ie Matt Cutts and others , we have to be very careful on the ambiguity surrounding the interpretation which becomes technically confusing. This input looks much more direct and fortunately it's been cross checked between two different search engine personnel.
It's amazing how one search engine can track the others intent. With that understanding , more transparent information should be accessible , in my view , since the other SE acts on it or understands it .