Google's Duplicate Content Penalty Still Exists

 There’s been a lot of debate about whether the duplicate content penalty is still a thing. Let me tell you—yes, it’s very real. This penalty, which has frustrated many search marketers (myself included), continues to be a factor that keeps websites in line.

Recently, I wrapped up a two-month test that gave me clear insights into how duplicate content can impact organic rankings. Using two of my own websites, I ran controlled experiments focused solely on content changes over 30 days. Here’s what I tested and what the results showed.

The Duplicate Content Test

Site 1:

  • Checked organic rankings before making changes.
  • Made no adjustments beyond the content changes being monitored.
  • Added three new posts each week on a random schedule.
  • Included a paragraph of disclaimer text on every page.
  • Let Google re-cache the changes and monitored rankings for 30 days.

Site 2:

  • Checked organic rankings before making changes.
  • Made no adjustments beyond the content changes being monitored.
  • Added three new posts each week, each at least 85% similar to high-ranking content from sites like CNN, Yahoo News, and WebMD.
  • Let Google re-cache the changes and monitored rankings for 30 days.

The Results

Site 1:
This site showed no negative impact on organic rankings from having the same paragraph duplicated across the site. This is valuable information, especially for industries like pharmaceuticals, where disclaimers or important safety information (ISI) need to appear on every page.

Site 2:
This site, on the other hand, experienced significant ranking drops by the second month. The homepage plummeted from positions 1–3 on target keywords to position 40 or worse. The deep pages also saw similar ranking hits once Google updated its cached versions of those pages.

After removing the duplicate pages during the third week of the second month, rankings began to recover. By the end of the month, most original positions were regained. It was a relief to see such a quick recovery after the duplicate content was removed. Years ago, a duplicate content penalty often meant your site was essentially buried by Google, with little hope of revival.

Final Thoughts

Duplicate content in small, necessary portions—like disclaimers or ISI text—is unlikely to harm your website’s rankings. However, duplicating entire pages or large chunks of content remains risky. I’d recommend conducting additional tests to see how this plays out under current algorithms.

If you’re pulling content from other sites, proceed cautiously. Avoid copying more than a few sentences, and always cite the source. Better yet, rewrite the article or summarize the key points in your own words.

At the end of the day, the solution is simple: write your own content. Originality not only avoids penalties, but it also gives your site the unique value that Google and your audience both want.

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