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Changes to Google Search Central docs · Monitoring and debugging

Prevent user-generated spam on your site and platform

Google has changed this page once since we started watching it on 3 October 2026.

Times are UK time

moderate change What the guidance says has shifted

Google expanded this guidance to cover tools that let users publish shared pages, generated content or web apps, and added a new 'Only index content meant for Search' section advising noindex or robots.txt blocking for content meant for direct sharing rather than search discovery. It also added monitoring recommendations using Search Console reports and anomaly alerts for indexable URL spikes.

Lincoln Digital's AI Overview

The change broadens which platforms and content types the guidance applies to, and explicitly recommends blocking non-search content from indexing by default. Site owners and platforms may want to review user-generated shareable pages and generated tools, and set up Search Console and indexing-spike monitoring to catch spam or unintended indexation.

Generated by AI from the change below: a guide to what it could mean, not a certainty.

Word for word

red was taken outgreen was put in

At the top of the page

Spammers often take advantage of open comment forms and other user generated content inputs and generate spammy content on an unsuspecting victim site. Hosting platforms [added: and tools that let users publish shared pages, generated content, or web apps ]may be similarly open to abuse; spammers may create a large number of[added: pages or] sites that violate our spam policies and add little or no value to the web.

Added

Heading: [added: Only index content meant for Search]

In “Only index content meant for Search”

Added

[added: If your service lets users create shareable pages, generated outputs, or interactive tools, consider whether that content is meant to be found through search engines or only accessed directly by people with a link.]

Added

[added: When pages are created for direct sharing, collaboration, or utility rather than public search discovery, apply the noindex rule (using a robots meta tag or X-Robots-Tag HTTP response header) or block crawling in robots.txt by default.]

In “Monitor your service for abuse”

Added

[added: Verify your site or subdomain in Search Console so you receive email alerts if Google issues a manual action against your site or detects security issues. Also check the Page Indexing report and Search performance report regularly for unexpected spikes in indexed pages, impressions, or queries that don't match your platform's purpose.]

Added

[added: Track platform-level creation and indexing metrics, and set up alerts for anomalies such as spikes in newly published public pages or a small number of users generating a large share of indexable URLs.]

On Google's page

The "before" is the same page with the earlier wording put back.

Before and after on Google's "Prevent user-generated spam on your site and platform" page, place 1 of 3: removed words in red, added words in greenBefore and after on Google's "Prevent user-generated spam on your site and platform" page, place 2 of 3: removed words in red, added words in greenBefore and after on Google's "Prevent user-generated spam on your site and platform" page, place 3 of 3: removed words in red, added words in green

Changed between our checks at and (UK time)Google's “last updated” date moved from 10 Dec 2025 to 26 Oct 2026Posted on X Link to this change

Quoted from Prevent user-generated spam on your site and platform by Google, licensed under CC BY 4.0, only where it changed, with the changes marked.

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