Please suggest me some tips to increase Page Rank

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  Ranu Jain: Hi Alina,
  
  Tell your client that there has been no PR update since last six months. You can share this link as well: ;
  
  http://www.seroundtable.com/google-pagerank-no-update-17276.html
  
  Your efforts will definitely show up once there is a PageRank update. ;
  
  Pagerank is the Google’s way of measuring how popular a website is; based on linkage data. Higher quality backlinks and the amount of them translate into a high Pagerank. In case you want to delve deeper into mathematical understanding (not needed really), here is the formula
  
  PR (A) = (1-d) + d (......) to PR (A) = PR (A) + (1-d) + d (......) ;
   ;  ;  ;  ;  ;  ; ;
  It means
  A page's PageRank = 0.15 + 0.85 * (a "share" of the PageRank of every page that links to it)
  
  So try to get quality links from high PR sites.
• 
  Alina Carter: Thanks +Ranu Jain It would be really helpful for me..
• 
  Ranu Jain: Glad to hear that +Alina Carter ;
• 
  Neil Cassels: +Alina Carter ;Pagerank is down to the authority which the site has, and that's determined by how many sites link to it, and the quality (PR) of those sites. That should determine whether your site improves after the latest pagerank update. You can see here for more info on PageRank: ;
  http://www.blogshape.com/basic-seo-pagerank-explained/
• 
  Andrea Pernici: The short anwser is that the PR that he see on the Toolbar is not the real PageRank.
  
  The real PageRank is always up to date.
  
  The same day the public PR is updated makes it old.
• 
  Astitva Kumar: If You website is just 6 month old, Google is yet not update Page Rank since 6 month......
• 
  Astitva Kumar: +Ranu Jain ; In Today context PR is not only based on linkage data.. Have you seen page rank penalty for any site ? ;
• 
  Andrea Pernici: The PageRank drop for selling link is the same concept I expressed above.
  
  It's only a cosmetic penalty.
• 
  Astitva Kumar: +Andrea Pernici ; Only Selling Link is not the reason of dropping or penalty of page rank..
  
  There is conceptual factor of PR
  1 - PR is an iterative Value for any Node so PR depend on the connected node of the web.  ;
  
  2 - Current Updation  ;characteristic of the Google Algorithms.
  
  3 -  ;Link Velocity is much higher.
• 
  Alina Carter: Thanks to all of you.. I got more than expected here.. Thanks once again.. :)
• 
  Charles Bartlett: Is PR a meaningful business goal? Or is it being used as a metric to gauge whether you've done something? As mentioned above Toolbar Page Rank is updated at arbitrary intervals.
  
  Would an increase in Page Rank actually increase sales or exposure to the organization? Not necessarily.
• 
  Arseniy Bolotsko: +Alina Carter ;You can also tell your client that PR is not really that relevant anymore.
• 
  Ranu Jain: +Astitva Kumar ;PageRank is dependent upon "linkage data" only. ;
  There are no other direct factors that affects the PR. Please refer to this link: http://google.about.com/od/searchengineoptimization/a/pagerankexplain.htm