Of course, Californians still can enter into legally sanctioned civil unions, with some attendant benefits, unlike residents of most other states, including the one I live in.
Here's the ad released by the marriage equality group Courage Campaign minutes after the decision was made public. Nice song by Regina Spektor.
Anti-Prop 8 demonstrators arrested in San Francisco, including two men who "stood for about an hour in the intersection calmly kissing while demonstrators all around them screamed, "Prop. 8 will go down, San Francisco (is a) big queer town" and other slogans." (emphasis added - these guys have stamina!)
Pam's House Blend (politically-oriented GLBT blog) links to a boatload of organizations' reactions to the decision.
Demonstrations across the country are planned for tonight. Click on that link for further info.