Hello my homepage disappeared ~30h ago from SERPs, My homepage is high quality, well written, a lot of content, no adsense, no ads above the fold, static site not wordpress My site positions before it disappeared: keyword1 - homepage ranking on 4 keyword2 - homepage ranking on 5 some long tails - homepage ranking on 1-2 I was doing constant manual link building (commenting manually) and everything was great till one day. I always was building links on mixed blogs, but this day my blog list was not so well mixed. I thought it will not matter, and I created ~20 comments on blogspots and ~5 comments on other various platforms. And a few hours later I lost all my rankings. I checked precisely the results till the last result page keyword1 - homepage not ranking //some subpages that were never search engine optimized were ranking between 100-1000 keyword2 - homepage not ranking //some subpages that were never search engine optimized were ranking between 100-1000 some long tails - homepage not ranking //some subpages that were never search engine optimized were ranking between 100-1000 site:domain.com - homepage ranking on 1st spot domain.com - homepage ranking on 1st spot Now I have a choice. a) Forget about this website, because I have a lot of work on my other sites b) Do a really high quality link building (manual web 2.0 with high quality content, amr with high quality content, etc), it's 40h-50h of work and I don't know if this would help. What do you think? What are the chances that option b) will rescue this site? Do you ever had similar situation?