topstar - 11:36 am on Jul 24, 2012 (gmt 0)
Alex, my theory is that if a someone has made a spam report about your site for link buying then Google will automatically de-value pretty much all new links even if they are natural. I am seeing it with one of my sites. It might gain a few places but it always drops back down where it was in every refresh/update, and the circle starts again. Gaining the lost trust back is now more important but it might be impossible. It is sad but I have had to stop developing my main site.