Duplicate content
 

Yes Google utilizes a duplicate content filter and it is a core component of Panda, but it is not necessarily a penalty.

How strict is Google's objection to duplicate content? One duplicate? Many duplicates?

duplicate content, you spam on your site. And Google Panda don't like it.

Duplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar.
Trick you can rent rewritter with low price for pass it

Google don't like duplicate content

Google just hates Duplicate content.

Duplicate content is the one which is most hated by search engine, Google penalizes for duplicate content. So, it's better not to copy content from others and check whether your content is being copied

The substance which is not original (mostly copied content) or nor relevant content is duplicate content. Google ranks high the websites with unique content and downs the copied content.