The aim of the Google Panda update was to block sites that duplicate content or scrape from other sights and secondly to downgrade sights that publish content without much value.
Sistrix crunched through a million search queries and compared them to before the update and came up with the following list of top losers.
A bigger list of affect sights is available at the following Google spreadsheet.
One of the major surprises for me was ezinearticles.com which is a favourite publishing platform for many SEO activists and has very strict human edited guidelines.
ezinearticles.com founder, Chris Knight, promises a major cleanup and making some drastic changes in his blog including removing low quality articles, incresaing rejection rate on some categories, increasing minimum word count to 400 and possible future universal nofollow tags.
Ehow.com was not only left unscathed but also experienced a traffic increase much to the surprise of many who claimed Google has effectively killed ehow’s competitors.