can someone please tell me how this site got a pr 4 http://www.voiphardware.com it only has 53 backlinks!
Well, it is a 1999 domain, has about 9000 pages of content and may very well have a 301 redirect or another large domain helping it along. I found a site a while back that had a homepage link from coffecup.com (pr 8) and very little else and was sporting a pr4.
Google purposely refrains fom showing an accurate backlink count to avoid abuse/overuse. Check Yahoo-it has thousands of backlinks. I'm sure if you went to their webmasters tools console, you'd see at least a thousand.
Actually there are 104 inbound links for domain with www and 122 without www. Check using "except from this domain" for external links The rest are internal links due to the fact that the site has thousands of pages indexed with internal links. Internal links (with anchor text) are really good stuff too and helps to keep pages out of the supplimental index with google and helps index pages that don't get picked up by se's at all within your site.
possible since the site has a backlink, I got also a site which recently updated to pr4 with 5 backlink. I don't know how google came out with the pr.