Google spam policies
Google's documented list of behaviours that can cause lower rankings or removal, covering cloaking, doorways, hacked content, keyword…
A demotion or removal applied by a human reviewer at Google for a spam policy violation, reported in Search Console with a reconsideration process.
Manual actions are distinct from algorithmic effects: they are notified, they specify the violation and whether it is site-wide or partial, and they are lifted only after a successful reconsideration request. Common types include unnatural links to and from a site, thin content with little added value, user-generated spam, cloaking, structured data issues and site reputation abuse. A reconsideration request must document what was wrong, what was fixed and how recurrence will be prevented.
A site receives a 'Site reputation abuse' manual action affecting one subdirectory, which stops appearing in results while the rest of the site is unaffected.
Google's documented list of behaviours that can cause lower rankings or removal, covering cloaking, doorways, hacked content, keyword…
Publishing third-party content on a host site to exploit that site's ranking signals; a Google spam policy violation regardless of…
Google's spam policy category covering links intended to manipulate rankings: buying or selling links, excessive exchanges, automated link…
A Search Console tool for asking Google to ignore specified inbound links or domains, intended for sites with a link-related manual action…
Google's free property-level reporting and diagnostics service covering search performance, indexing status, enhancements, manual actions…