frankleeceo - 7:26 pm on Sep 26, 2013 (gmt 0)
This can explain the drastic dances that happened within the last month or so. The initial roll out plus all the fine tune tweaking. Around the 4th and then the 17~19th.
Don't think it's coincidental that this rolls out together with taking out search query data. Now makes it even harder to reverse engineer why and how a page can rank for certain long tails.
It is exciting however for smaller publishers as long as they can satisfy some "unknown" complex queries.