The number of pages indexed is roughly proportional to your PageRank. Read more: http://www.searchenginejournal.com/gasp-you-still-need-to-care-about-pagerank/24584/
yes off course page rank matters according to google. Google page rank mean you can trust the website and its not easy to get a page rank on google so this is matter and very important to get a page rank on google.
I still believe in Page Rank and I know for SEOs who have success in Google still consider Page Rank in making their strategy effective
Page Rank shows the importance of a particular website. It has great importance in customer point of view but not in SEO point of view.