vanessafox - 2:17 pm on May 28, 2010 (gmt 0)
I want to stress that in my article, the two official statements from Google are 1) it's an algorithm change impacting long tail queries; 2) it's a ranking change.
I tried to be very clear in my article that everything else I wrote was my speculation. Matt Cutts specifically said that the algorithm change was intended to surface "higher quality" sites/pages, so in the article, I speculated on what that might mean and how someone might go about figuring out how to improve their sites to meet that higher quality standard.
None of that speculation is based on inside knowledge of any kind, I just hoped it could be starting point for anyone hit by this to start some creative thinking about analyzing the situation.
It's unlikely, btw, that this is related to caffeine, since caffeine is an infrastructure change, not a ranking algorithm change.