About one month ago I got into internet marketing and launched a website targeting a few keywords. These keywords are the in the medium-difficult range. Rankings have been moving along nicely but now my website does not move up or down in rank. I am stuck on page 4. Does anyone know what is going on? Do I need to use more aggressive backlinking techniques? My strategy has mainly consisted of direct blog commenting, and using web 2.0s reinforced by scrapebox.