Original thread : http://productforums.google.com/for...asters/crawling-indexing--ranking/36SiohQK3oc Here below what this poor webmaster written I've read the FAQs and searched the help center. My URL is: http://mysite.com Be aware of a new BlackHat Negative SEO technique. So just found out yesterday that one of our competitors is mass emailing a bunch of site owners who are linking to us pretending to be us and saying to take down our links or we will pursue legal actions. This competitor is targeting all our backlinks to get removed and site owners are actually taking them down and its affecting our rankings. This would really suck if this competitor gets away with this. One site owner sent us a copy of the email that is being sent which is here: "Dear Webmaster: I write to notify you of unauthorized linking on your website. Camchatty.com is the owner of the exclusive rights protected under copyright law and other intellectual property rights. The following links are specific examples of URLs that link to http://mysite.com/ without authorization: http://www.your_site_that_is_linking_to_us.com Camchatty.com hereby notifies you that the following constitute or incorporate links to http://mysite.com/ which were placed without prior permission and are therefore unauthorized. Camchatty.com requests that you act expeditiously to remove or disable access to all unauthorized links to http://mysite.com/ on your website. We also ask that you provide us with written assurance of this fact within 3 business days from the date of this letter. The undersigned has good faith belief that use of the material in the manner described herein is not authorized by Camchatty.com or its agents. Under penalty of perjury, the undersigned is authorized to act on behalf of Camchatty.com with respect to this matter. If these links are not removed within 3 business days, we will have no choice but to file a formal complaint with your hosting company and domain registrar. If this happens they will notify you to take down the offending links or risk having your website shut down or domain name inactivated. Sincerely, Dan Moore Legal Department Camchatty.com" What are the steps we should take in order to get this competitor to stop and penalized for his actions? Can google do anything about this? We are pretty sure we know which competitor is doing this seeing how this person has sent us threatening emails in the past.