Thread: Matt Cutts Announces Algortim Change

I just saw a tweet from Matt Cutts announcing yet another change. We all know they do this over 300 times a year, but it's rare that they make an announcement.
He says they are going after copycat sites and websites with weak content, and this will effect 2% of all websites.
If you experienced a traffic dip this wee, be concerned! mattcutts.com/blog/algorithm-change-launched/

My opinion is that original content is an important part of the properly executed SEO anyway. If done correctly, no need to be concerned. As for the rest, I'm all with Google on this one.