What is an Alexa Rating?
The Alexa websites states, "The Alexa Traffic Rank will show how popular the site is compared to yours, including Reach, Pageviews and more."
I've downloaded the Alexa Toolbar so that I can see the rank of each page I visit.
Want to see more stats for your site?
My sister shared this site with me today: http://www.mygooglepagerank.org/
You can check your Google Pagerank. This page offers more about your score, once you've entered your site in the site above. I thought it was fairly insightful.
Have fun checking out your site!