Received an email from GWT this morning, a notice of unnatural links detected. But it reads like they have detected outbound links on my site: "Specifically, look for possibly artificial or unnatural links on your site pointing to other sites that could be intended to manipulate PageRank." They may be referring to text links, which make a reasonable amount of revenue. But this would explain why we haven't had any luck restoring our traffic or rankings no matter what we have tried. Advice?