Content · Glossary
What is information gain?
Information gain is how much new, useful information a page adds compared with what already ranks for the same topic. Original data, first-hand experience and expert insight increase it; rewriting the top results does not.
Written by Noor KhanWhy Information gain matters
When dozens of pages say the same thing, search engines and AI systems have little reason to prefer yours. Content that adds something new gives them a reason to rank or cite it. Google has a patent describing information gain scoring, and its guidance repeatedly rewards original, experience-based content.
How Information gain works
- Pages are compared with others on the topic that a user has seen or that already rank.
- Unique facts, data, examples and perspectives distinguish a page.
- Experience-based detail is hard to copy and easy to recognize.
How to apply it
- Add data from your own work: results, benchmarks, cases, screenshots.
- Include expert opinion and where you disagree with common advice.
- Answer questions competitors skip.
- Cut sections that only repeat what every other page says.
Example
Two articles on 'clinic SEO': one summarizes generic tips, the other shows how a specific clinic's leads changed after restructuring its service pages. The second has far more information gain.
Common mistake
Using AI or rewriting tools to produce a 'better' version of the top results. It adds length, not information.