Effective nonprofits? Yes, says some interesting research by Guidestar and Hope Consulting. But, the research also found that very, very few donors did any research on the nonprofits and even fewer did research on effectiveness.
This piece, from the Chronicle of Philanthropy gives an overview of the research and some hands-on ideas of what your nonprofit can do to maximize income from the many, many people who care.
It's worth a quick read....it might provide a long term return.