We have a lot of discussion and chatter around it at WebmasterWorld and all but one of the automated tracking tools showed significant changes.
Here are the automated tools charts for yesterday (click on them to go to their sites):
First reports of this change happened around yesterday morning where Pete Hall said, “Something happened in the UK overnight. Not really sure what to make of it – some verticals shifted quotes bit and others remain unchanged.”
But then as the day went on and as people checked their analytics for the day’s results, other webmasters started to notice: