I have had great success linking out to reliable and authoritative sites from my articles. This is how I basically built my incoming links and PR
before all the social networking/bookmarking stuff came into play.
Are You Linking Out? You Should Be
We all want our sites to be popular, the hub of your chosen niche. You do this by providing valuable information that people want to link to.
Providing valuable information has a snowball effect. Good valuable content and information = getting talked about on and off line = incoming links from all kinds of people