Trading Links
The all time best way to get PR and Serps is trading links. If you can find webmasters with sucesful sites who do not know what PR is and you trade relevant links you can jump so high in PR and in SERPs. Say someone has a PR6 and you have a PR1 site and they don’t realize what PR is then they will likely trade you and it is so much better for you than them. That PR6 link will jump you to a PR4 if not even a PR5. Trade as many as you can.