I've been operating my website, pcfastlane.com, for around 3 months now. It gets around 100 visitors a day, a few of which come from major search engines. The website has also been on the home page of Digg and Shoutwire before. Unfortunately, I still have a PR of 0! What can I do to improve my PR? How long does it take to increase my PR? Right now I'm publishing articles on free article websites and submitting my websites to free directories.
Pagerank is all about backlinks. Possibly by the time of last pagerank update you did not have sufficient backlinks to gain pagerank at that time. Expect you will see change in next PR update. If you have good SERPs and good traffic the PR will just be green icing on the cake.
You just need to wait it out, PR isn't updated very often. Keep doing what you are doing and you should get PR the next google PR update.
PR updates are generally every 3-4 months although theres been some issues at google which may put this back. If you've had your site mentioned on digg etc then your going to get some backlinks as a lot of sites use digg for a content source. don't sweat it for PR, just look at the bigger picture which is stable traffic
focus more on traffic and converting that traffic rather than PR. Its next to pointless unless you want to sell links or the website.