It will focus on scraper sites and sites that use duplicate content.Google does filter its content regularly and automatically. For instance, it can usually immediately filter and reduce your site's rankings if you have hidden text, bogus links or if you are keyword stuffing. Tips for SEO Always, having fresh, unique content is one of the best ways to not only drive traffic, but to enhance rankings in the SERPs.If you have more then one websites that you own, but that share content, make sure whatever duplicate content you have on a site is replaced with unique content. If you don't, you will probably drop in the rankings.
Thank you friend. Even i was searching for an answer for the same question . Your information was useful.
As i know that google panda updated on 6 May 2011. Its version is 2.2. I like google panda because its count on do follow link.
Yes Google panda remain more stronger in the new version. But panda hunts only those sites whose having a copied content. So only unique and quality content holders are safe from panda so not to worry more.