Another thing to keep in mind is to think about how many unique search queries are entered into Google on a daily basis. I don't know what the figure is at Goo

Another thing to keep in mind is to think about how many unique search queries are entered into Google on a daily basis. I don't know what the figure is at Google, but some engineer at Bing said that 25% of searches they've never seen before. You can't get a human to look at each of these searches and remove the content farms, you have to do it algorithmically or else it will never work. Getting users to do the work will help with the most egregious abuses. One thing that content farms are good at is coming up with answers for questions that don't have an answer available on-line. For example, the query "what's the personal cell phone number of <insert celebrity>?" will just take you to a spam farm because that's the only kind of website that claims to know the answer.