More evolved search engines, such as Google, tend to rely heavily on algorithms to evaluate pages. However, these companies also tend to occasionally take what they call “manual actions” against spammy sites. This means that they’ll actually manually demote the site in search results or even remove it from search indexes, which can have horrible consequences for a business. Using the Manual Action page in Google’s Webmaster Tools, you can view the manual actions taken, the reasons, and what a webmaster must do to have their case reconsidered. These harsh penalties can be for anything from low quality links to hidden text to duplicate content.