Scraping refers to the automatic collection of content, especially by acquiring web content through crawlers.
There are times when the act of publishing the content obtained by scraping on your own site was popular, and it is often used as a malicious term in the SEO industry.
If a large amount of copy content is used as described above, a large amount of duplicate content will also occur, and it is expected that damage will occur, so the content creator uses Google, etc. with PubSubHubHub, etc. It is necessary to correctly recognize the author of the content.