What is Content farming?
 

A website which attempts to attract users and develop its search engine rankings by publishing great amounts of low quality content or content copied from other websites. It is unethical and not only infuriates the search engines but your potential customers as well. If you are into black hat SEO tactics, content farming would be one of them.

use should stops that activity , otherwise Google will drop Your rank.

I think,
Content farming is the process where is use to publish content to again.

Google will consider this as duplicate content.

I totally agree with you.

I am also agree with you.