Getting a mix of high PR and low PR backlinks.
Many people think a good campaign consists only of high PR backlinks. Thats true, but not absolutely.
One of the best way to build up a link building campaign is to get a good mix of both high and low PR backlinks as effective SEO strategy.
High PR links provide "muscle" into the link juice, but low PR links are also necessary to give a ground to the high PR backlinks.
My experiences confirm this point of view.
Thank you for replies