
21-07-2005, 17:20
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Re: Page rank
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PR is only a small part of the entire search engine algorithm. Many different people, including Mike Grehan (http://www.e-marketing-news.co.uk), have talked about why PageRank is not necessarily something you want to concentrate on when you’re trying to get better search engine rankings. He talks about PageRank and Rich Linking in an October 2004 article called Filthy Linking Rich (http://www.e-marketing-news.co.uk/Ot04/RichLinking.html). It’s an interesting read and will explain why links are more important that PageRank.
I mentioned it earlier, but PR0 (zero) is not necessarily a bad thing. The number we see on the Google Toolbar is only updated once a quarter. New web pages are consistently given a PR0. And if that page missed the PR update deadline, then it will continue to show as PR0 until the next update. Therefore, what the Google Toolbar shows is not necessarily accurate.
PageRank is not always passed from one page to another. Google has, for the last few years, been cracking down on websites that buy and sell PageRank. In fact, they’ve been doing it since Google won the SearchKing lawsuit in 2003. Just because a web page shows that it has a PR7 doesn’t mean that that page will pass any PageRank to your web page if you get your link on that page. If that page has been manually tweaked by Google, then it might still show a PageRank of 7 in the toolbar but it might not pass any PR to your page.
PageRank doesn’t always pass its full value to another page. If a web page has a PageRank of 7 showing in the Google Toolbar but has too many outgoing links on that page, your web page, if included on that page, might not get the full effect of a PR7 link. It might only really pass the equivalent of a PR4 or PR3. For example, this can happen if a PR7 page has more than 100 outgoing links on a page that links to your website. 100 outgoing links is just an arbitrary number. But, if a page has more outgoing links on it than incoming links it generally is not a page you want to have linking to you.
PageRank can be estimated at times.. Many web pages are dynamic in nature. Their URLs include query strings and other parameters. Therefore, since Google hasn’t actually crawled that web page it tends to actually estimate the PageRank number that we see in the Google Toolbar. The estimate is actually the PageRank of another web page, perhaps a page that’s a part of the URL that is currently being shown. For example, let’s assume that Google knows about a page at this URL: (www.mydomain.com/article.php) and that page has a lot good links going to it—so it’s truly a PR6. If a new web page is created with this URL: (http://www.mydomain.com/article.php?...oogle-PageRank), it’s very likely that that page will also be assigned a PR6 in the Google Toolbar. However, that new page does not have a PR6—so a link from that new page might not be what it seems.
The bottom line is that the PageRank number we see in the Google Toolbar isn’t something that you necessarily would want to put any faith in. There are too many variables, and the number we see in the Google Toolbar is not necessarily a good representation of link quality or importance. Google’s original intention was to show the public the value of a web page by showing it’s Google PageRank number. Originally, many years ago, when it was first introduced, that idea was a good one. However, over the past few years, many people have figured out how to manipulate that Google Toolbar PageRank number. Furthermore, it’s not updated on a regular basis, which complicates things even more. It’s now gotten to the point where you just cannot rely on it anymore. To me, that Toolbar is more of a novelty if anything else.
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