Forum Moderators: open
I've seen numerous messages on the forum where people are talking about 'PR3', 'PR4' etc.
I assume this relates to some kind of rating as to how well ranked the site is on one or more search engines, but I could be wrong (not for the first time!).
Could someone please explain what these numbers mean and how I can tell which number(s) I should use to rate a site in the future. It's all a bit confusing to a new guy :)