Hi Pidipady,

If you are a regular reader of Matt Cutt's Blog (FYI he is Google's engineer), you would have found out in his recent post how flawed the Alexa Traffic Ranking could be. We had recently thought of adding Alexa tool bar for measuring our site's popularity in the search engines. However, we dropped the idea soon after we read that post by Matt Cutt.

I think Google PR should be enough to know the popularity of a particular website in the world wide web. However, you should not too be preoccupied with the PR stuff as it is just a ranking and has little to do with your search engine ranking which of course if way too more important than the page rank of your website.