According to Google, 30 per cent of everything online is a duplicate of something else somewhere else online.
We first read about this on Gizmodo.
On the GoogleWebmasterHelp YouTube channel engineer Matt Cutts explains how duplicate content affects a site’s SEO.
It turns out that Google doesn’t recognise duplicates — like blockquotes, reblogs, reposted images, etc — as spam. Instead, it groups all of the duplicated content into a single lump and attempts to surface the best of it.
As Gizmodo points out, “how Google deals with duplicated content isn’t all that surprising — it’s just crazy how much of the information out there is just a copy of something else.”
Here’s the explainer video: