Google directory PageRank

The Google Directory PageRank is an 8-unit measurement. These values can be viewed in the Google Directory. Unlike the Google Toolbar which shows the PageRank value by a mouseover of the greenbar, the Google Directory doesn't show the PageRank values. You can only see the PageRank scale values by looking at the source and wading through the HTML code.

These eight positions are displayed next to each Website in the Google Directory. cleardot.gif is used for a zero value and a combination of two graphics pos.gif and neg.gif are used for the other 7 values. The pixel widths of the seven values are 5/35, 11/29, 16/24, 22/18, 27/13, 32/8 and 38/2 (pos.gif/neg.gif).


[edit] "PageRank" as a trademark
The name PageRank is a trademark of Google. The PageRank process has been patented (U.S. Patent 6,285,999). The patent is not assigned to Google but to Stanford University.

Alternatives to the PageRank algorithm are the HITS algorithm proposed by Jon Kleinberg and the IBM CLEVER project. Many HITS concepts are now incorporated into Teoma and Ask.com.