Thanks. But here is the issue, contact who? The Google webmaster forum says there is nobody to specifically contact regarding these issues.
"First Google knows that you have no control over who links to your site and will not penalize a site for links from a spammy site. Looking at the pages that you listed those sites appear to have been hacked, there are 100's of hidden links on those pages. It is a little interesting that the hackers who hit those sites choose to include a link to your site along with the 100s of other sites. "
Do you have some special contact information to share?