“Google TrustRank Algorithm” are google updated Algorithm of “Google PageRank”.

What Is Google Trustrank ?

this new algorithm are the most important algorithm by google to calculate web site “authority” score based on the website “trust score” that received by the value of “authority site” links the web site have.

more hi value links for trustrank site the more “trustrank score” the site will have and become more favorite site to google that you will see in google search results.

an examples of authority sites can be found here