It is important to ensure that one single source is the authority for your Content. In our moderation process we do not accept content that we find to be duplicate content (posted on another site that is not curated without authorization). Unique, never-before-published content performs best.
Would absolutely agree! Unique, never-before-published content is always the best. But it just doesn't end there. That 'unique' piece of content should also be meaningful and provide value to the readers. It should be contributive in a way. When I had to write research proposal online UK, I made sure to double-check my content for any sort of plagiarism or whether it has any sort of similarities with content that has been already published.