Google is now encouraging webmasters to attribute content to authors with rel="author". You can read what google has to say about it here and here.
A quote from one of google's articles....
When Google has information about who wrote a piece of content on the web, we may look at it as a signal to help us determine the relevance of that page to a user’s query. This is just one of many signals Google may use to determine a page’s relevance and ranking, though, and we’re constantly tweaking and improving our algorithm to improve overall search quality.
I am guessing that google might use it like this..... If you have several highly successful articles about "widgets", your author link on each of them will let google know that you are a widget expert. Then when you write future articles about widgets, google will rank them much higher than normal - because google knows you are an authority on that topic.
If it works this way the rel="author" attribute could be the equivalent of a big load of backlinks for highly qualified authors.
What do you think about this? Valuable?
Also, do you think that there is any way that google could be using this as a "content registry" that will foil some attempts at content theft and content spinning?
Any ideas welcome! Thanks!