What is a toxic link ?

[ngocptit]

Toxic links are unnatural links that may negatively impact the SERP ranks of the website. Google leave out such internet site from its data source. Toxic links may also invite a Penguin penalty.
Post Merge: 02-27-2016, 07:01:38
Toxic links are unnatural links that may negatively impact the SERP ranks of the website. Google leave out such internet site from its data source. Toxic links may also invite a Penguin penalty.

[halley_pham]

Toxic links are backlinks harming the search ranking and Page Rank (PR) of any domain. The Penguin updates from Google changed the search engine scenario forever.  To explain simply, the purpose of Penguin updates was to target sites occupying top search ranking results unjustly. You must already know that it is easy to rank any domain with black-hat SEO methods and these rankings manipulate the overall quality of Google search.

[TomClarke]

The term toxic link is not used by Google. It is fully an SEO chatter class invention and some are using this term to either gain users to their site and scare the beieebers out of you as well as carve out importance for themselves or sell you something.
As far as Google is concerned, there is no such thing as a toxic link. There are bad links of course, but any link that can actually gain a penalty does not happen in a vacuum. It is actually hard to do.