| piracy | Search engines aim to reduce the organic search rankings of content that infringes on copyright. Google introduced a filter in 2012 that reduces the visibility of sites reported for numerous DMCA-related takedown requests. |
| ctr | Also known as click-through-rate, shows a percentage of users who click on an organic search result to visit your website. Calculated by dividing clicks by impression and multiplying by 100. |
| deceptive advertising | Deceptive advertising, as the name suggests, is an advertisement that misleads prospects in some way. |
| mirror sites | Sites that attempt to deceive search engines into indexing more than one instance of a site by duplicating it on another server and domain. This is not a preferred practice as search engines have filters in place to detect mirror sites and if found will penalize mirror sites by de-listing both the original site and the mirrored site. |
| classifier | See Document Classifier. |
