...which is strongly against some of the 'conventional wisdom' you may hear.
I was thinking that too but didn't say anything. So in spite of them saying they don't use "clicking back" as a signal because it's too unreliable, yet here they are saying they use it as a signal. It's obviously a part of the algorithm if they are using it in this instance. How can they turn it off for some types of search but leave it on for others?
And of course they want this featured to get widely rolled out so they can increase their profiling so the reward (bait) is a whole 3 extra links! Where do I sign up?