Use this site to see which businesses in your state contributed to support prop 8. From the site:
“These businesses have the right to support whatever ballot measures they want, but fair-minded citizens of all sexual orientations also have the right to take their money elsewhere and not patronize businesses that support bigotry. This site is not a witch-hunt but is a tool intended to help people make informed decisions when they shop for products and services.”
I support this.
I also support this.