Pagerank Patent Updated

A new version of one of the pagerank patents was published today.

There are some changes to the document. Many of them appear to be bringing parts of the first two patent applications involving pagerank together.

The New Patent

Method for node ranking in a linked database
Inventor: Lawrence Page
Assignee: The Board of Trustees of the Leland Stanford Junior University
US Patent 7,058,628
Granted June 6, 2006
Filed July 2, 2001


A method assigns importance ranks to nodes in a linked database, such as any database of documents containing citations, the world wide web or any other hypermedia database. The rank assigned to a document is calculated from the ranks of documents citing it. In addition, the rank of a document is calculated from a constant representing the probability that a browser through the database will randomly jump to the document. The method is particularly useful in enhancing the performance of search engine results for hypermedia databases, such as the world wide web, whose documents have a large variation in quality.

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Microsoft Reranking and Filtering Redundant Information

How much variety should you see in search results? Should search engines mix things up a little, so when you look for something with a search, you don’t see results that are all exactly about the same thing? Should pages in those results that seem too far off topic be pushed back in the results?

Imagine performing a search at MSN, with the search engine responding to your query by gathering links to pages, and descriptions of those pages, then it takes a closer look at the content of those documents, and sorts them in a different order

For example, searching for “Abraham Lincoln,” you might see pages about the following within returned documents:

  • About someone’s cat, named Abraham Lincoln,
  • The Abraham Lincoln Theme Park,
  • A website selling Abraham Lincoln memorabilia, and;
  • And other pages only somewhat related.

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Contextual Ads on Parked Domains

Nice article from a few days ago over at CircleID titled Questioning Parked Domains and Google AdNonSense.

The author starts off by asking if contextual advertising is helping or hurting the web. He notes that on first blush, it appears to be a good idea. But, he digs a little deeper to see how it is being used in some instances, and decides that maybe it isn’t such a good idea:

To make money with contextual advertising you want your content to be bad. Yes, you want it to be bad. You do not want the user to like what you have on the webpage or find what they are looking for in hopes that after not finding it, they will either do another search in your embedded Google search box or they will click one of the contextual ads on the page in hopes of finding what they came there to find

I wonder how the advertisers feel about appearing on pages like these. Google recently published on patent application that described a method for advertisers to find good advertising partner, looking at such things as the quality of the content on the advertisers’ sites:

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Researching Corporate Acquisitions

Since writing about Google acquisitions a few months ago, and Yahoo Acquisitions, I’ve received more than a couple of requests from people asking about some strategies and methods for researching corporate acquisitions online.

There are a lot of potential sources of information that you can look at, but a few that you might want to start with first.

1. Web-based searches for reference sites, news articles, blog posts.

It’s possible to find lists of acquisitions on reference sites, on blog posts by people whose companies have been acquired, and through news stories about purchases. Search for things like “Google Acquired” (with the quotation marks) or “Google acquisitions” (again, with the quotation marks). Make a list of all of the companies that you can find that way, and then conduct searches for those companies to see if you can find out more about the acquisitions.

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Web Decay and Dead Links Can be Bad for Your Site

How harmful are dead links to search engine rankings? Or pages filled with outdated information? Can internal redirects on a site also hurt rankings? What about the redirects used on parked domains?

A new patent application published last week at the US Patent and Trademark Office (USPTO), and assigned to IBM, Methods and apparatus for assessing web page decay, explores the topics of dead pages, web decay, soft 404 error messages, redirects on parked pages, and automated ways for search engines to look at these factors while ranking pages. I’ll explore a little of the patent application here, and provide some ideas on ways to avoid having decay harm the rankings of web sites.

The authors of the patent filing include:

Trying Out Open Source Content Management Systems

I’m not sure I remember who originally pointed this site out to me, but I’ve been recommending it to people for a good number of months. gives you the opportunity to try out different content managment systems of different types before you install them on your own server. It’s not easy seeing what a content management system might be like by looking at a site that uses it. It helps to see what the administrative side of the software does, too – how it is set up, how easy or difficult it may be to use, and so on.

At OpenSourceCMS, they include dozens of portals, blogs, ecommerce sites, groupware, forums, wikis, e-learning systems, and more. You can log in as an administrator, and make as many changes as you want while you are. Every four hours, they replace the software with a fresh version, and let people go back at it, testing the software out.

Even if you aren’t actively looking for a content management system, it’s worth spending some time at the site, and seeing what’s possible. There are also articles and forums, as well as user reviews of different CMS systems. If you’ve worked on web sites, but never used a content management system before, this is a nice place to learn about them.

Google’s Goldman Sachs Webcast

There’s still a little time to register, and watch along, as Google has a 12:55 pm (PST) presentation at the Goldman Sachs Seventh Annual Internet Conference.

As they note, you need to have RealPlayer or Windows Media Player installed on your computer, and it needs to be capable of playing sound.

I haven’t listened to one of these Goldman Sachs webcasts before, but I’ve read a few transcripts from other companies talking in previous settings to institutional investors.

Like this one from February – Goldman Sachs Technology Investment Symposium – with Chris Liddell, Sr. VP and Chief Financial Officer of Microsoft.

Update –

Continue reading Google’s Goldman Sachs Webcast

The Value of Embedded Links

There’s something magical about having the right link in the right place at the right time on a page.

Most web pages that you visit these days will have some type of main navigation on their site to the major categories within the site. Often you will see another set of links pointing to things like a privacy policy, a contact page, or directions, or other information about the site, and the people or business behind the site.

Many sites also use secondary navigation on pages within sections of the site, to point to the main pages within that section. Go to a different section, and you may see a different set of links in the secondary navigation. This is pretty common in a site that has a tree like hierarchy, and it’s a practice that is helpful to visitors, and even to search engines. Seach engines will try to get an understanding of what a page is about by looking at the content of the text within links that point to pages.

These navigational structures often surround a content rich area on a page, filled with articles or information, or descriptions (and possibly pictures) of products or services. On pages describing products or services, it’s not unusual to have a link from that description to a page specifically about that product.

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