Here are links to articles about nonprofit websites-
5 Things You Should Think About for Your Nonprofit Website (re: charity)
5 Things You Should Think About for Your Nonprofit Website (re: charity)
3 "Hidden" Jobs Your Nonprofit Website Has to Perform (SW Creatives)
Your Nonprofit Website Must Have These 5 Things (about.com)
4 Ways to Improve Volunteer Satisfaction Using Your Website (Wired Impact)
Nonprofit Websites that Work: Showcase Your Personality, Passion & Impact (Getting Attention)