In this case "PR" is probably referring to Google's page rank, which is basically what Google thinks of your site on the scale of 1 to 10. This is determined by the amount of links that point to your site. You can learn more about Google's page rank here http://searchengineland.com/070426-011828.php To find out what your website's page rank is you can use this tool. http://www.populararticles.com/tools/ ---------------------------- http://1stclasswebsites.com
This shouldn't be news to anyone, but for some reason it is to some who don't quite understand what PR is all about. It's PAGE RANK NOT SITE RANK
PR stands for "Public Relations," but its is also a popular way to call Google's pagerank when expressed with a number