As salam.

My reader asking me about WHY PAGE RANK IS IMPORTANT? 

4 reason why page rank (PR) is important to us as a blogger :

  1. Get free search engine traffic.
  2. Rank higher than your competitors..
  3. Get more advertisers and more revenue.
  4. Retain your brand.

What is PageRank®?
Google PageRank is an important factor to determining your website position in search engines for keywords found in your website pages.
PageRank is a link analysis algorithm, named after Larry Page[1] and used by the Google Internet search engine, that assigns a numerical weighting to each element of a hyperlinked set of documents, such as the World Wide Web, with the purpose of "measuring" its relative importance within the set.
From Wikipedia

Websites linking to your webpage are like votes and increases the weight your website receives in SERPs.
Posting articles to article websites with your website link, adding your website to link directories, link exchange with related high PageRank® websites can all improve your website PageRank®.
Some Services.
Put services here
Recommended Services
To increase your PageRank® , You can join any of the following services: