Whitey - 12:07 am on Feb 16, 2013 (gmt 0)
I think it's worth noting, whilst acknowledging Google's intent, that there are a lot of issues to overcome to implement G+ and authorship etc effectively for ranking purposes.
A lot of members have expressed some of these, and there are many more practical conflicts. That's why I think Google hasn't rushed into this. It's coming, but I don't think with a bang ..... more of a very measured approach.
Eric Schmidt is kinda hellbent on cleaning up the cesspool of results as he put it a few years back, which is why all manipulative ranking techniques in major verticals have been largely eliminated and replaced by brand. But the time it will take, and the the relative ease of technology required to compete may let competitors step up a gear.
That's why I think Google is changing its focus from search to knowledge as they see the defense of their core product becoming more vulnerable and growth in advertising maybe stalling.