Matt Cutts confirms that some links can harm your site here - http://searchengineland.com/google-talks-penguin-update-recover-negative-seo-120463 http://searche

Matt Cutts confirms that some links can harm your site here - http://searchengineland.com/google-talks-penguin-update-recover-negative-seo-120463 http://searchengineland.com/google-talks-penguin-update-reco... Here's an example of a site which recovered from a Penguin penalty by removing external links - http://www.seomoz.org/blog/how-wpmuorg-recovered-from-the-penguin-update http://www.seomoz.org/blog/how-wpmuorg-recovered-from-the-pe...? And here's some more general data analysis - http://www.micrositemasters.com/blog/penguin-analysis-seo-isnt-dead-but-you-need-to-act-smarter-and-5-easy-ways-to-do-so/ http://www.micrositemasters.com/blog/penguin-analysis-seo-is...