This thread is not for Neophyte SEOs. So think twice before posting, to avoid spoiling the thread with nonsense or irrelevant posts which will be removed without prior notice. Thanks.
This thread is a continuation of a discussion we had at the forums WebProWorld back in 2007 http://www.webproworld.com/webmaster...l=1#post353033 and I still did not get a clarification.
So lets continue the discussion here about Dangling Links (or Nodes) and PageRank Sculpting to come up to date.
So here are some points to get started with.
Eric Enge Interviews Google's Matt Cutts
Eric Enge:Matt Cutts:"What we've been doing is working with clients and telling them to take pages like their about us page, and their contact us page, and link to them from the home page normally, without a NoFollow attribute, and then link to them using NoFollow from every other page. It's just a way of lowering the amount of link juice they get. These types of pages are usually the highest PageRank pages on the site, and they are not doing anything for you in terms of search traffic."Source: http://www.stonetemple.com/articles/...tt-cutts.shtml"Absolutely. So, we really conceive of NoFollow as a pretty general mechanism. The name, NoFollow, is meant to mirror the fact that it's also a metatag. As a metatag NoFollow means don't crawl any links from this entire page. NoFollow as an individual link attribute means don't follow this particular link, and so it really just extends that granularity down to the link level.
We did an interview with Rand Fishkin over at SEOMoz where we talked about the fact that NoFollow was a perfectly acceptable tool to use in addition to robots.txt. NoIndex and NoFollow as a metatag can change how Googlebot crawls your site. It's important to realize that typically these things are more of a second order effect. What matters the most is to have a great site and to make sure that people know about it, but, once you have a certain amount of PageRank, these tools let you choose how to develop PageRank amongst your pages."
Notice: Lets ignore for now the bolded sentence and stick to the meta robots "noindex" and "nofollow" directives, because the link attribute "nofollow" Google is treating different: http://www.mattcutts.com/blog/pagerank-sculpting/
So now lets continue:
Dangling Links & Google's PageRank
A classic example of what a "dangling link" is.
Ammon explains that a page that is that is not in the Google index but the links are picked up to that page, won't count. Why? Well, the original PageRank document has a concept called "dangling links," which reads:Source: http://www.seroundtable.com/archives/014335.html"Dangling links are simply links that point to any page with no outgoing links. They affect the model because it is not clear where their weight should be distributed, and there are a large number of them. Often these dangling links are simply pages that we have not downloaded yet.Because dangling links do not affect the ranking of any other page directly, we simply remove them from the system until all the PageRanks are calculated. After all the PageRanks are calculated they can be added back in without affecting things significantly."
Is that really the case?
Looking a bit further, what is about the IBM patent posted by our member Bill Slawski:
Source: http://www.seobythesea.com/2007/08/s...angling-nodes/A dangling web page processing system ranks dangling web pages on the web.The system ranks dangling web pages of high quality that cannot be crawled by a crawler.
In addition, the system adjusts ranks to penalize dangling web pages that return errors when links on the dangling web pages are crawled.
By providing a rank for dangling web pages, the present system allows the concentration of crawling resources on those dangling web pages that have the highest rank in the uncrawled region.
The system operates locally to the dangling web pages, providing efficient determination of ranks for the dangling web pages. The system explicitly discriminates against web pages on the basis of whether they point to penalty pages, i.e., pages that return an error when a link is followed.
By incorporating more fine-grained information such as this into ranking, the system can improve the quality of individual search results and better manage resources for crawling.
Why all this? I think it is time to crack down and figure out if PageRank Sculpting works or not, and not just relying on stories of Google employees or well known SEOs, which many times they turn out to be misleading, even if they were not intentionally.
All above said: Where does the PageRank go in the above situations: To heaven or to hell?
Thanks in advance for your contribution.