Most webmasters are interested in monitoring the traffic on their websites, and many use built-in statistics functions or 3rd-party providers like Google Analytics and quantcast.  Many are familiar with the classic Alexa Ranking.  But there is even more interesting information available: traffic comparison. 

Not only can traffic comparison be useful on your own site, but also for researching trends, such as the rise of social networking sites.  Traffic comparison also helps when seeking link partners for search engine optimization or evaluating links from your own site.

Here's what the top comparison sites offer - as well as a site that lets you easily use them all...