Google quality
guidelines state that “Any links intended to manipulate PageRank or a site’s ranking in Google search results may be considered
part of a link scheme and a violation of Google’s Webmaster Guidelines”. These types of links are referred to as unnatural or
artificial links. Examples include:
- Paid links, or links resulting from some form of material incentive such as free products and advertisements.
- Reciprocal linking.
- Links emanating from large number of guests.
