How do SEOMOZ calculate duplicate content?

JoostBruining

first of all i have to much duplicate stuff on my website end cleaning it up. But if i look at GWMC the duplicate stuff is a lot less than in SEOMOZ? can someone explain to me what the difference is?

Thnx, Leonie.

AndreVanKets

Moz doesn't just look at the text of a page, it also looks at the template and how "similar" it appears compared to other pages.

Here's a quote from Dr. Pete:

"Our system currently uses a threshold of 95% to determine whether content is duplicated. This is based on the source code (not the text copy), so the amount of actual duplicate content may vary depending on the code/content ratio."

Here are a few articles you can read to get a deeper understanding.

http://www.seomoz.org/blog/duplicate-content-in-a-post-panda-world

http://www.seomoz.org/blog/duplicate-content-block-redirect-or-canonical

http://www.seomoz.org/blog/the-illustrated-guide-to-duplicate-content-in-the-search-engines

http://www.seomoz.org/blog/rethinking-duplicate-content

http://www.seomoz.org/blog/fat-pandas-and-thin-content

http://www.seomoz.org/blog/the-illustrated-guide-to-duplicate-content-in-the-search-engines

Greg