Possibly because the links are not natural.
Originally Posted by EliseBlanchett
Possibly because all of the duplicates of the press releases are duplicate content, which Google just went after with the Farmer/Panda update.
It is probably a bit early to judge the results. I suggest waiting 30 to 60 days to see if there is any improvement. Most things happen much slower with Google these days.
"It's inexcusable for scientists to torture animals; let them make their experiments on journalists and politicians." -Henrik Ibsen