PageRank refers to rank that a website gets and helps in determining the value or the importance of the website. So maintaining a good page rank is important for any website as it also helps in improving its ranking with the search engine. Different tools can be used for improving the google page rank. For instance you can link your website with other websites which would help you to get a good ranking. So if you are able to get linked with many websites then it would improve your ranking as well.
The ranking is determined by Google only and it uses the back links connected with the webpage to determine its popularity. It then calculates rank by using its own algorithm. So the page rank is assigned by google. While determining the number of backlinks, google does not take into accounts the links used in link farming. It also considers a number of other factors that determine the ranking. If you want to enjoy a good traffic at your website then you need to make sure that you have a good ranking with google. So for this you can contact an online media company which can help you get good quality back links which can increase your popularity and improve the PageRank.