It is a well-known fact that there is a lot of duplicate content on the Internet. The question is how big the proportion is, and as the biggest and most popular search engine, Google has given its answer.
At the Google Search Central Live event in Singapore, Google Webmaster Trends Analyst Gary Illyes said that 60% of the content on the Internet is duplicate.
According to Google, “Duplicate content is generally substantial blocks of content within or across domains that either match exactly or are significantly similar to other content.”
Therefore, for search engine optimization (SEO) purposes, websites should have to avoid providing such duplicate content and should instead provide unique content.
