Hi, recently after the penguin 3.0 update, I noticed that I have dropped 6 spots overnight. So I got an Ahrefs account, and to my shock, I have been filled with a huge load of spammy backlinks, ranging from gambling websites to some random webpages that no longer exist, or even just a blank page with my link on it, but it was adjusted so my link was hidden / the same as the background color. I'm not an seo expert or work in the SEO industry, I was just wondering are there any advice out there so I can recover from this? I don't plan on doing the same for my competitor, so please don't reply saying I should just do the same. I don't want to sink to their level I just want to clean my backlinks up, and then get back to my number 1 spot and dominate the industry again. thanks!