rwilson - 1:28 pm on Sep 18, 2012 (gmt 0)
They're not exactly 'paid links' because the websites publishing the links are not being paid, but a business is being paid to create the pages purely for SEO reasons.
Not a violation of Google's guidelines
It looks as though all the articles being created on the Wiki sites are identical (duplicate content)
Google catches on to duplicate content, so it may not even be helping them that much.
Those aren't rules. Those are Google's suggestions of how to stay within what they consider best practices to help them find your site, understand your site, and to rank your site.
Exactly. If they aren't following the guidelines it may hurt them, so why follow them? Instead of worrying about what they're doing focus on your efforts and what you believe are within the guidelines.