198. Unnatural Link Spikes: can identify whether an influx of links to a page is legitimate. These unnatural links can potentially devalue a page.
199. Links from Article Directories and Press Releases: Article directories and press releases have been abused to the point that Google now considers both of these link building strategies to be a “link scheme” in many cases.
200. Manual Actions: There are several types of these , but most are related to black hat link building.
201. Selling Links: Being caught selling links can hurt your search visibility .
202. Google Sandbox: New sites that get a sudden influx of links are occasionally placed into the Google Sandbox , which temporarily limits search visibility.
203. Google Dance: Google Dance can temporarily change france mobile database rankings. According to Google patents , this may be a way for them to determine if a site is trying to game the algorithmoogle dance
204. Disavowal Tool: Using the Disavowal Tool it is possible to remove a manual or algorithmic penalty imposed on a website that has been a victim of negative SEO.
205. Request for Reconsideration: A successful request for reconsideration may result in the cancellation of the penalty.
206. Temporary Link Schemes: Google has caught people who create and quickly remove spammy links. Also known as a temporary link scheme.
Google Exact Match Domain EMD Algorithm Update Guide
Google’s EMD algorithm update focused on eliminating spammy or low-quality exact match domains from the SERPs .