Hey guys, I have someone "threatening" me that he'll negative SEO my website with thousands of bad links and that he'll copy my site's content on some low quality sites, if I don't buy his "white hat" backlinking service. I didn't reply, but it got me thinking about the vulnerability of my site. If I'll start seeing an increased number of spammy backlinks, is it advisable to disavow them? Or should I just leave everything as it is? I've read that Google says that nobody can do any damage to you, but a friend of mine lost all his traffic about 2 years ago, exactly because of a negative SEO attack. His site was already big and established with about 300K visits per month. He got manual actions by Google and his traffic went literately to zero. After two months of disavowing backlinks (he also hired a company to help him on which he spent $10K), the manual action was removed and his site needed a whole year before it fully recovered. From then on he's disavowing bad links weekly. Also, if someone copies the texts from my site and posts them on some low quality sites, could that really have a negative effect? I'd appreciate your opinions. Thanks.