As part of our ongoing efforts to promote high quality search results, we are taking action today on one European and one German linking network.
Take a look at our Webmaster Guidelines on link schemes (http://goo.gl/wuI1gs
) to make sure that your site is not engaged in deceptive linking practices! If you hired someone to work on your site, such as an SEO, check if they are using illicit practices by reviewing examples from the link schemes page.
Learn more about unnatural links and how to file for reconsiderations over on our German blog: http://goo.gl/JGj7ZA