makin - 9:35 am on Nov 21, 2012 (gmt 0)
I have some interesting data for you:
I have a network of 200 websites with enough traffic to make an study. Some of them starts dropping since friday (20-30%) and other ones starts winning traffic (20-30%).
It's funny, because some websites with same template, win positions and others down.. so, seems thats not affect SEO on page. Because two identical websites with different content, one ups and the other one drop.
I don't have duplicated content. I'm not doing black hat seo. I have never been penalized in any update.
And there is only ONE THING IN COMMON in all websites that have win and lost traffic. All websites ups or down positions in the secondary search engines. I mean, my websites are European and I lost / won traffic in America. European traffic for my websites are stable.
Sorry for my english ;)