The TrustRank formula is a procedure to rate correctly the quality of websites. The central idea is related to the PageRank method - taking the linking structure to generate a measure for the quality of a page. The process can be seen as a auxiliary improvement of the PageRank method.

The main point of the algorithm is the collectioخرید کتابn of trusted webpages. Such pages are the source of trust. Trust can be assigned to other page by linking to them.

A lot of Web spam webpages are created just with the purpose of confusing search bots. These pages, primarily produced for business reasons. Page Rank and related methods for determining the relation of weight of Web pages have been subjected to manipulation.