Oct 22
20
Google reserves the right to apply manual actions, better known as penalties, to websites it finds in violation of its Search Essentials (previously known as Google’s Webmaster Guidelines). The specific reasons and scope of manual actions can be manifold, and the actual impact may range from barely noticeable to utterly disastrous for a website’s presence in organic Google Search results.
More here:
Google penalties, manual actions and notifications: A complete guide