One cause I'm really plugged into is anti-stigma against mental illness. This picture of balloons floating away up into the sky was taken at the NAMI (National Alliance on Mental Illness) Walk Chicago in September of 2007. My husband and I go on the walk almost every year.
NAMI's website: http://www.nami.org/
Going along with this, I have a blog called Creative Schizophrenia at the esteemed mental health website http://www.healthyplace.com (see this website's blog)