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exactly what is Trust Rank?

and is it a part of the Jagger update?



1:07 am on Nov 1, 2005 (gmt 0)

WebmasterWorld Senior Member annej is a WebmasterWorld Top Contributor of All Time 10+ Year Member

People are asking for more information on trustrank in the long Jagger thread and the questions are getting lost in all the posts. I thought maybe if the topic has it's own thread it would help get people to discuss this.


9:08 pm on Nov 4, 2005 (gmt 0)

10+ Year Member

TrustRank Algorithm

A buddy of mine pointed me to a white paper by Zoltan Gyongyi, Hector Garcia-Molina, & Jan Pederson about a concept called TrustRank.

Human editors help search engines combat search engine spam, but reviewing all content is impractical. TrustRank places a core vote of trust on a seed set of reviewed sites to help search engines identify pages that would be considered useful from pages that would be considered spam. This trust is attenuated to other sites through links from the seed sites.

TrustRank can be use to

automatically boost pages that have a high probablility of being good, as well as demote the rankings of pages that have a high probability of being bad.

help search engines identify what pages should be good canidates for quality review

Some common ideas that TrustRank is based upon:

Good pages rarely link to bad ones. Bad pages often link to good ones in an attempt to improve hub scores.

The care with which people add links to a page is often inversely proportional to the number of links on the page.

Trust score is attenuated as it passes from site to site.

To select seed sites they looked for sites which link to many other sites. DMOZ clones and other similar sites created many non useful seed sites.

Sites which were not listed in any of the major directories were removed from the seed set, of the remaining sites only sites which were backed by government, educational, or corporate bodies were accepted as seed sites.

When deciding what sites to review it is mostly important to identify high PR spam sites since they will be more likely to show in the results and because it would be too expensive to closely monitor the tail.

TrustRank can be bolted onto PageRank to significantly improve search relevancy.

Posted by Aaron Wall (of SEO Book.com) at February 7, 2005 04:03 AM

Ref. [seobook.com...]


9:54 pm on Nov 4, 2005 (gmt 0)

10+ Year Member

I'm happy to see that Google is interested in human editing, long overdue. It's depressing spending all day making great content only to get burried by sites that spend all day sending emails to people like "We've placed a link to your site at [insert garbage site] if you could pleae place a link to our site [insert high ranked site] using such and such anchor and keywords... blah, blah.

Natural links are the exception in Google, not the rule. This has caused massive distortions. So much so that in Google content doesnt seem to much matter. Only in Google do I see a 1000 page site that deals with all espects of "widgets" burried behind site after site with a single page on "widgets" loads of ads and a ton of what are really lame inbound links from link pages no one visits.


10:17 pm on Nov 4, 2005 (gmt 0)

10+ Year Member


Is this not an opportunity to help these webmasters you appear to want to support by clearly defining Trustrank?(sorry if I missed this elsewhere)



9:31 pm on Nov 5, 2005 (gmt 0)

WebmasterWorld Senior Member annej is a WebmasterWorld Top Contributor of All Time 10+ Year Member

Would someone remind me of how I can check only the backlinks that aren't from pages on my site? I have a theory on trustrank but can test it out better if I can filter out internal links.


9:43 pm on Nov 5, 2005 (gmt 0)

10+ Year Member

Hi annej,

link:yahoo.com -allinurl:yahoo.com

not perfect but close.


10:04 pm on Nov 5, 2005 (gmt 0)

10+ Year Member

Sorry I forgot the http://
here is the correct query:
link:http://yahoo.com -allinurl:yahoo.com
This 66 message thread spans 3 pages: 66

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