LOS ANGELES (AP) - Gov. Arnold Schwarzenegger is getting a taste of his own marketing. Two months ago the celebrity governor plastered his grinning face on billboards from Phoenix to Boston, hoping to entice employers to relocate to the West Coast with the slogan, "Arnold says, California wants your business (Actually he says 'Kah-li-fornia.')" Now the competition is getting up close and personal. Two of the targets of Schwarzenegger's sales pitch, Massachusetts and Nevada, are retaliating with rival advertisements in California cities, angling for jobs with the promise of lower taxes and a brighter future. They're also taking friendly shots...