How does google calculate the site for page rank? Is the number of backlinks or quality of backlinks?
I think quality of back links related to your sites topic and genuine topics . which hasn not been indexed from other sites earlier .
Both are important. Always link with relevant sites with quality content and has good PR's. I'm sure your page rank will increase on the next update.
A lots of factordepends upon the PR Like:- Trust rank of site where u got the back link Amount of link on that page Relevance of link Age of link Relevance of other link on that page The interlinking stracture of ur site many other factors too.......... As per my experiance content is not a factor in case of PR Day Kevi
Relevancy is irrelevant in the calculation of pure PageRank. It may be important for ranking in the results page, but has nothing to do with the little green bar. Content on your page has nothing to do with pagerank. Check out this page it has PR, but its content is "..." http://intercage.com/ The actual calculation is a google secret, its a combination of linking pages PR and quantity, add to that some sites loose the ability to pass pagerank and the whole nofollow fiasco. http://www.google.com/technology/