Point as many quality links to your website. Comment on dofollow blogs, submit articles to 3rd party sites and article distribution services, place your signature on every forum and gradually you will see results.
The better page rank and you will be in top pages of google searching on your keywords. chk out this: http://webmasterdailytips.com/2009/09/how-to-increase-pr-of-your-website-or-blog/
Getting quality of back link helps. Google gives more value on the quality compared to those irrelevant sites that you are getting.
there are many ways in order to increase your pagerank, you just have to comment on other blogs, leave your blog links their. or you can hire someone to this stuff for you.
All says Back links will boost, but now m doubted.. found many my clients site's PR degraded having more bl with some good quality.. So Google now considering all the factors for ranking
Use the search button, man! Even better, search this section of threads called SEO or link development. The strategies will very, depending on what you are trying to do.
I did a lot and got stopped at PR3 I want to find a free way to increase PR But high PR backlink is the only way...but it costs