Check out the attached image. As you can see my client received a spike in back links during July. A few weeks after the spike in back links my clients site lost major rankings?? I build back links very carefully but I did buy a package from a vendor from here back in March 9th. It included article directory and wiki links pointing to my money site. I am almost certain this is the case. But this is back in March and it took Google that long to index them and penalize the site? Im hoping it wasnt because of the spike in back links from the vendor I would like to use them again. Thats just wishful thinking, because I did around 400+ links to my clients site. But that also include inners pages. Would anyone like to comments? What should I do to regain rankings? I guess I should mention that our High PR links from highprsociety were dropping and I honestly didint think it would matter. But I lost 2 PR2 and 3 PR3 links because I didnt pay for the credits and honestly didnt think it would matter.