Google has announced they’re going to more aggressively take on content farmers:
As ‘pure webspam’ has decreased over time, attention has shifted instead to ‘content farms,’ which are sites with shallow or low-quality content. In 2010, we launched two major algorithmic changes focused on low-quality sites. Nonetheless, we hear the feedback from the web loud and clear: people are asking for even stronger action on content farms and sites that consist primarily of spammy or low-quality content.
It’s good to be reminded that content farming is a reaction to search engines getting better at filtering out pure spam.