Why is PageRank important?
While it is argued that PageRank is no longer as important as it once was, it still plays an important part of Google's algorithm that determines where in the search engine results a certain page is displayed for a given query.

A high PR page will usually rank higher in Google's search results, and better results means more organic traffic to your website.

You can increase your PageRank by increasing the number of links to your website. Quality links from quality websites with high PR and the same theme as yours influence PageRank the most.

How it work
Using a special query to the Google database, it is possible to extract certain metadata for an indexed page. When querying Google for the URL
Code:
http://www.apple.com/macbookpro/
, we would get something like this:

URL_1:32:
Code:
http://www.apple.com/macbookpro/
Title_1:19:Apple - MacBook Pro
Rank_19
CrawlDate_1:10:1 feb 2006
Summary_1:169:You’ve dreamed [...] of the PowerBook G4. ...
Link_1:0:
CacheSize_1:3:21k
Related_1:0:
The line that says Rank_19 is the important one, and it is believed to represent the current PageRank for this URL, ie (9/10).

Most other PageRank prediction tools use this method of extracting the current PageRank value. What this tool does different though is that it makes sure it gets the current PageRank value for the exact URL entered. Where other future PageRank tools get it right most of the time, we make sure we get it right everytime.


PR Tools
Code:
http://livepr.raketforskning.com/