Resource for finding volunteers OR finding opportunities

VolunteerMatch
VolunteerMatch (http://www.volunteermatch.org/) is a nonprofit organization with a mission to help everyone find a great place to volunteer, and offers a variety of online services to support a community of nonprofit, volunteer and business leaders committed to civic engagement. Interested volunteers can enter their ZIP code on the VolunteerMatch home page to quickly find local volunteer opportunities posted by nonprofit organizations throughout the United States.