PR = Page Rank

I wouldn't put to much stock into it though.

BTW, it's what GOOGLE thinks about your site's relevance, importance, popularity and whether a viewer would like to see it.

Again, don't put too much stock into it, as it will be a thing (As for as SEO) of the past, very soon. Think about it...PR is so highly manipulated now. People are selling links from high PR pages. Where's the relevance in that? This is why you're seeing the sometimes gawd awful results show up in the SERPs. :roll:

Hi,
PR refers to Page Rank of your web page. This is one of the ways by which Google determines the relevance or importance of your page.
For more on this you can "here" it from the horse's mouth itself at
www.google.com/technology/
You can also get more information on how to better your PR at
www.google.com/webmasters/4.html

PageRank level is a numeric value that represents how important a page is on the web. For details information you can check this google PageRank explanation and how to make the more of it here:

http://www.webworkshop.net/pagerank.html