I had a niche site that was ranking on page one for my keyword but then i started getting trackback links from bunch of viagra and adult blogs, I use a wordpress blog for my niche. The first thing that ran through my mind was 'oh they just trying to get backlinks from me so I'll just delet them' Then I left my blog alone, only commented on other peoples blogs 2-3 times per day. Couple days later I notice a HUGE drop in my traffic. So i check how well I rank for my keywords and Im nowhere on the first 7 pages. There is a post on page 8 from my blog but the domain itself is missing on +20 pages, I stoped checking after that. I know this can't be because of anything that I did because my website was whitehat. Only thing I automated was bookmark couple posts, and I haven't done that for couple weeks. All my other pages rank somewhat on their searches but they droped 3-5 positions that they used to have and my domain is completly gone for all keywords. I think it was because one of my competitors simply spammed my domain on those linkfarm websites so google dropped me. How can I protect myself from this in the future? How can I get my domain back to page 1, if it is even possible?