I was involved in writing that post and, in particular, that sentence about feedback. I don't work for PR. I work for our search quality team, as a liaison between the team and the public to ... bring feedback we hear in a variety of places to help consider improvements. Hacker News was one of the places earlier this year where there was a lot of feedback about wanting to see how to make quote search work better. In responding to (see my profile) and exploring that feedback, it wasn't that quote searching was broken but that people couldn't readily understand we really did bring back documents with the quoted terms. So that's the feedback that went back to our team, and we looked at how to improve things which lead to the change we announced.