What are the main aspects Google Page Rank and Alexa Page Rank.

There is no doubt that within the past years most likely many changes, adjustments and modifications regarding the ranking methods of Google have taken place, but PageRank was absolutely crucial for Google's success, so that at least the fundamental concept behind PageRank should still be constitutive.

Google Page Rank Aspects:

Google Page Rank

PageRank is one of the methods Google uses to determine a page's relevance or importance. It is only one part of the story when it comes to the Google listing, but the other aspects are discussed elsewhere (and are ever changing) and PageRank is interesting enough to deserve a paper of its own. PageRank is also displayed on the toolbar of your browser if you've installed the Google toolbar (http://toolbar.google.com/). But the Toolbar PageRank only goes from 0 – 10 and seems to be something like a logarithmic scale:

Toolbar PageRank (log base 10)	Real PageRank
0	0 – 10
1	10 – 100
2	100 – 1,000
3	1,000 – 10,000
4	10,000 – 100,000
5	and so on…

Google's PageRank is a numeric value that represents how important a page is on the web. Google PageRank figures that when one page links to another page, it is effectively casting a vote for the other page. The more votes that are cast for a page, the more important the page must be. Also, the importance of the page that is casting the vote determines how important the vote itself is. Google calculates a page's importance from the votes cast for it. How important each vote is taken into account when a page's PageRank is calculated.

Alexa Page Rank Aspects:

Alexa is a web directory and  provides free traffic metrics, search analytics, demographics, and more. Alexa ranking depends upon how many visitors you get daily. You observing both the two factors its seen that none of them actually is a perfect way to describe the success of a website respectively . Both of them have their pros and cons . However , the PageRank gives an idea of how popular a website is in internet in building reputation and Alexa gives an estimate idea of how much traffic a website is receiving in month. In short we can say that both are important to receive handsome sponsorship and attract tons of Advertisers .