Maybe it's your sponsored blogs. The posts written under the "Great Speculations" blog have a variety of contributors - 60 in all.  Those offered by the "Trefis Team" are definitely a "sponsored" contributor.  All of their posts, that I looked at, have a similar anchor text of "Trefis price estimate for " followed by the company name at least once within the post. These links go to their website @www.trefis.com.  Sometimes within a post they link out to other websites like seekingalpha or www.sec.gov, but generally most of the external links from the posts go to their site @ www.trefis.com.  

http://adage.com/digital/article?article_id=146135