Most searchers encounter PageRank through the Google Toolbar. For example, when writing my Google Search History Expands, Becomes Web History article last week, I spent some time going through all the Google Toolbar help files to find a good explanation to link to about the meter. This was the best I found, a short mention that says:. Wondering whether a new website is worth your time? See that big long green bar? If you hover over it with your mouse, it will actually show you the PageRank score for the page you are visiting, like this:.
Google is perfect! Showing both numbers makes more sense when you get to less perfect pages. That means we have a PageRank of 7 out of 10 possible points. Less than perfect. Sniff, sniff. This is a terrible page! Actually, no. That gave me an error.
Notice also how the meter has no green, to show no PageRank for the page. Many searchers may have never seen the PageRank meter. You had to manually choose to do it, and it was mostly search engine optimization people that did so.
I believe the quantity of people that opt-in to see PageRank is much larger than the set of active SEOs. This is because in some cases, the Google Toolbar will get downloaded with it enabled.
In other cases, Google will encourage you to switch the meter on. Read the article to understand more. Happy with the privacy issues my article explains as does Google itself? Now the meter is enabled. Speaking of search engine optimization people, those SEOs are the group that created the acronym you might occasionally hear: PR, for P age R ank.
Search Engine Land, with 7 out of 10, is PR7. That error page? For example, compare the category about search blogs at Google to the Open Directory :. These are exactly the same categories, Google on the left, the Open Directory on the right. The should be nearly identical. First, Google is WAY out of date. You can see the Open Directory has many more listings than Google shows.
Once a key part of Google, the Google Directory was dropped from the Google home page and relegated to the More Google Products page back in March In addition, the Open Directory itself has been down or not making new information available for download on occasion. The other key difference is that the listings in the Google Directory are sorted by PageRank. These PageRank bars tell you at a glance whether other people on the web consider Google considers a page to be a high-quality site worth checking out.
Google itself does not evaluate or endorse websites. Rather, we measure what others on the web feel is important enough to deserve a link. Using PageRank centrality, our view is transformed. Despite his limited connections, Michael balloons to one of the largest nodes in the network when PageRank is applied. He is one of the few nodes in the network receiving incoming links from highly influential nodes.
This has pushed his PageRank score up significantly. A quick Google confirms that Michael was VP of Natural Gas Trading — an important node in the network that we may not have identified with the other centrality measures. Understanding network dynamics and influence can be a game of trial and error. Different measures are better suited to certain scenarios or datasets. Our toolkits offer a range of social network centrality measures, each designed to uncover different kinds of influence.
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