I have some posts that are optimized for a specific keyword. The keyword itself has extremely low competition. Most of the competing other pages are PR 0-2, with barely any links pointing to them. I have onpage optimized for the KW and the other sites haven't. Yet, a few weeks after posting the content, I'm not ranking in top 100 even for it. Could my website be penalized or something?
I get a lot of porn links, but I disavow them. According to google's index I have no backlinks at all.