pr or no pr how well it is attracting the people online and how it is shown in search results actually help in getting better traffic.
You think low PR sites can beat Adobe? just search for Illustrator on Google. Just twice it has been used on that page but its first cos of PR 9.
Not really. Of course, I do like to see my sites have high PR. However, I have a site that used to have a PR5 then it dropped to a PR4 and now a PR3... yet it has better rankings and more traffic now than it did when it had the higher PR. I also have plenty of other sites that outrank higher PR sites for the same keywords.
When I was starting it was really important for me. Now it is not so important. I realized many things, developing your site with love) can make not just PR but everything else higher))
PR is really important, it is the measurement of whether your site is very active and is gaining visitors, PR also indicates that your site are easily be found by google. So when google easily finds your site, it will follow that possibly many visitors will come to your site. I hope I have answered your questions.