GUUUI - Navigation blindness
"…on any given Web page, users have a particular goal in mind, and this goal drives their use. Either they click on a link that they think will take them toward the goal, or (seeing no appropriate forward clicks) they click the Back button to take another path." (from the article The Page Paradigm published in 2003)
It's nice to hear someone say this, after all the focus people have put on the navigation schemes. Integrate your links into the content!