What is Content farm?
Content farm, also known as a content mill, is a site or an organization of freelance writers. They publish much textual content, that is cheap and not so good. These articles have to generate a traffic for search engines and generate advertising revenue by placing an advertisement on the webpage. To generate a big revenue, the content farm has to create a massive amount of content.
Articles written by content farm are particularly intended for search engine optimization, not for normal users. That is why are articles low-quality.