Obviously, you are a great company and despite what some believe, you are not evil. You are great for America and an asset to the World, in my opinion.
However, when you stated the other day that you are taking steps to make sure web pages from content farms don't show up prominently in your search results it follows that you Google believe that content farmers and web spammers are bad for the Web, or at least your search engine. You said it was feedback from your users that convinced you to go after these bad content makers. So Google, if they are bad (evil?) or simply not good for the Internet then why Google are they still your partners?
It begs the question, if you are serious about making articles from content farms show up less in your top search results why don't you just do it already?
Here's what I suggest:
Step 1: Define what a content farm is. By the way, please also define what web spam is. I mean very specifically so that everyone knows what is and isn't web spam. I think I understand what you are referring to, but I am not sure. I guess examples of sites that fit the various definitions of content farms, web spam and 'mostly duplicate content' ... would be helpful. I would then suggest that you threaten them ... again. That way the bad guys who are scared of you might just leave our Internet for a different one. Or, maybe they will change their behavior and start creating content that is not so bad. Right.... (sarcastic tone intended).
Best Reading - http://www.webpronews.com/topnews/2011/01/22/google-are-you-really-serious-about-removing-web-spam