Check out ANA's 'Online Journal of Issues in Nursing':
Schloman, Barbara. (April 22, 2002). Information Resources Column: "Plumbing the Depths: Using the Invisible Web" Online Journal of Issues in Nursing. http://www.nursingworld.org/ojin/infocol/info_8.htm
I have bookmarked this article as so many ways to search listed I didn't know about!
Many excellent original content articles listed at OJIN---all available for free---glad to see some of my dues go towards this journal. Karen