He’s not quite ready for feedback from results just yet, so give it a few weeks so the engineers can do their magic before posting on Matt’s blog.
From what I can see here the update decreases the amount of spammy sites from the index and fixes some canonical domain issues (www vs. no www). My sites haven’t experienced any changes in rankings up or down in quite a while, so these updates are getting less and less exciting.
Never complain when your ranking well. Why rock the boat?
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