Venture capitalists are gloomier than ever about their prospects. The Silicon Valley Venture Capital Confidence Index hit an all time low of 2.77 in the fourth quarter. (The survey ranks confidence from 1 to 5, with 1 being the lowest.) It was the fifth consecutive new low since the index began in the first quarter of 2004. The index is compiled by Mark Cannice at the University of San Francisco. He contacted 33 San Francisco Bay Area VCs and asked them about their outlook for the entrepreneurial environment for the Bay Area over the next six to 18 months.