In accordance with my SEO experience, you should focus on the number of of your backlinks. Not quality the backlinks. Normally of Google update PR every three months. So, you must constantly generate reverse until or who unless the public relations have update. You not get high PR If you stop the promotion.

More quality back links to your website's ranking in search engines is very important do you think about a reverse number of links the higher the quality. The best way to increase your website's page rank is a lot of high-quality links to your website.

Create d fallow link get as soon as backlink