aristotle - 10:21 am on May 24, 2013 (gmt 0)
- an SEO company I know that got TOTALLY obsessive with cleaning up their backlink profiles got hit pretty badly by Penguin 2.0. This is a company that I know well - speak to on the phone regularly. They tell me they disavow and also have spent a LOT of efforts cleaning up their backlink profiles. Anyway, I was always interested to see how they'd do with Penguin 2.0 - on 3 sites they actually run themselves (not their client sites), all lost 4 to 6 positions on many keywords - meaning heavy demotion on first page, or relegation to second page.
When you remove and/or disavow backlinks, then the site loses the rankings boost that those backlinks had previously provided. This could explain the drops of 4 to 6 positions on many keywords.