In California it really doesn’t matter who you vote for, all 54 electoral votes will go to the Democratic candidate. That’s pretty much a given. (Intrade.com is currently giving odds of 94% chance of Obama carrying Cali. 7% for McCain) If you lived in a swing state, your vote might count for something, but with the electoral college system and living in California, it doesn’t.
If what you want to do is vote, “I protest this whole stupid charade.” then it probably also doesn’t matter whether you write in Ron Paul or vote for Chuck Baldwin, ’cause as much as it saddens me, no one is listening to that protest either.