no diss, but i agrre to diss agree!It doesn't have anything to do with page visits PR is based on a few factors.
The greatest one is inbound links. So if you have a home page link to your website from a lets say PR 9 site that will give you PR. So basically PR is built on how many other PR sites are linking to yours.Then they do all sorts of google maths and give your site a PR.
QUALITY is the key here and not quantity.