About a month ago, I was posting some manual blog comments on sites my competitors also have links on. Here is what happened: As you can see, my backlinks nearly doubled. This is all from one link placed. They have a feed on the site that shows recent comments on the sidebar, so my link is now on 700 + pages of their site. The link is also no-follow so now my ratio of no-follow to do-follow is 1.2:1. Ahrefs shows discovering these links around March 1. A couple of my keywords, including a keyword I was ranking number 1 for months is now completely gone, which happened with the March 6 refresh. I don't know whether i'm jumping to conclusions or not that this is what did it, but it makes my link velocity look atrocious. I feel like my options are: - Wait till comment gets bumped off the sidebar widget (The site is getting comments at an extremely low rate, could take months) - Use the disavow tool - Wait out the refresh for a couple of weeks to see if anything bounces back.