Page Rank Concept

Page Rank concept: Is it important for site ranking?

Page Rank is a patented algorithm by Stanford University to assign weighted importance to a web page determining its relevancy on the World Wide Web on a scale of 0 to 10.

Page Rank was developed at Stanford University by Larry Page and Sergey Brin as part of their research project.

The theory behind:
Page Rank is based on the linking structure on a page. The more the links pointing to a page, the more will be the page rank. Google believes that if many links are pointing to a link, then that page must be of value to the searches and it assigns the page a high weighted value.

Page Rank: Google Toolbar
Page Rank can be viewed on the Google toolbar. Google has not disclosed the algorithm for calculating the page rank but it is in simple words measure of the popularity of a web page.

The Google directory page rank is measured on a scale of 0 to 8.

Page Rank Algorithm:

Page Rank of a page is the summation of all the PR’s of the links pointing to that page.

Thus if page A has a 4 links pointing to it then the PR of A will be:
PR(A) = PR(1) + PR(2) + PR(3) + PR(4)
If some page is giving links to other pages also then the PR of that page is equally divided among all the other pages.
For example if page 2 has a PR of 4 and it is linking to 4 pages then each page will gain a PR of 1.

Thus, weighted PR is calculated as
PR(A) = PR(1)/(links from 1) + PR(2) /(links from 2) + PR(3)/(links from 3) + PR(4) /(links from 4)

According to the founders of Google, the sum of all the PR’s to a page is 1.

Conclusion:
Though PR is a good indication of the popularity of the site, but it is not the only factor. The main focus of any one developing the site should be to provide quality content to its visitors and not bother much about PR. If your website is delivering quality data then it will definitely get good PR and thereby online visibility.

Always remember “ Content is the king on Internet. Rest all follow”.

Saba Karimi

Interesting Facts About Google

Interesting Facts About Google:

• Phrase your question in the form of an answer. So instead of typing, "What is the average rainfall in the Amazon basin?", you might get better results by typing "The average rainfall in the Amazon basin is."
  
• T his is an old one, but very important: Put quotes around phrases that must be searched together. If you put quotes around "electric curtains," Google won't waste your time finding one set of Web pages containing the word "electric" and another set containing the word "curtains."
• 
  Similarly, put a hyphen right before any word you want screened out. If you're looking up dolphins, for example, you'll have to wade through a million Miami Dolphins pages unless you search for "dolphins - Miami."
• Google is a global White Pages and Yellow Pages. Search for "phonebook:home depot norwalk , ct," Google instantly produces the address and phone number of the Norwalk Home Depot. This works with names ("phonebook:robert jones las vegas, NV") as well as businesses.
• Don't put any space after "phonebook." And in all of the following examples, don't type the quotes I'm showing you here.
• Google is a package tracker. Type a FedEx or UPS package number (just the digits); when you click Search, Google offers a link to its tracking information.
• Google is a calculator. Type in an equation ("32+2345*3-234=").
• Google is a units-of-measurement converter. Type "teaspoons in a gallon," for example, or "centimeters in a foot."
• Google is a stock ticker. Type in AAPL or MSFT, for example, to see a link to the current Apple or Microsoft stock price, graphs, financial news and so on.
• Google is an atlas. Type in an area code, like 212, to see a Mapquest map of the area.
• Google is Wal-Mart's computer. Type in a UPC bar code number, such as "036000250015," to see the description of the product you've just "scanned in." (Thanks to the Google Blog,
  http://google.blogspace.com/ , for this tip and the next couple.)
• Google is an aviation buff. Type in a flight number like "United 22" for a link to a map of that flight's progress in the air. Or type in the tail number you see on an airplane for the full registration form for that plane.
• Google is the Department of Motor Vehicles. Type in a VIN (vehicle identification number, which is etched onto a plate, usually on the door frame, of every car), like "JH4NA1157MT001832," to find out the car's year, make and model.
• For hours of rainy-day entertainment, visit http://labs.google.com/ . Here, you'll find links to new, half-finished Google experiments-like Google Voice, in which you call (650) 623-6706, speak the words you want to search for and then open your browser to view the results.

Disclaimer: It wasn't working when I tried it. (Ditto a lot of these experiments.)