Page rank is a numeric value that represents importance of a web page and all about inbound links and also quality content
If you place quality content in your web page and improve navigation structure with the help of more back links the page rank will automatically be 4 and above.The main backlinks can be from
DMOZ, Yahoo Directory.This will boost out your website traffic and increase website popularity.
Additional techniques used to increase page rank is Newsletters and resources like articles, E Books etc
Thanks for your time and support, Leave a reply