Hi, I started a blog from 2012-11-07 with low competition, long tail keywords. At first, as I added more articles, I got more traffic (good sign). But suddenly, about on 2013-01-02, I lost almost all my rankings and traffic dropped to 10~20 visitors per day. In GWT, I did not receive any warning message, my ranking just disappeared. Over the past month, I continue building more backlinks, but it seems don?t help my ranking. Have you ever encountered this kind of problems? How did you do with that? Please give me some suggestions. P.S. Please forgive my poor English.