Photos: 'Tech or treat'

Poke me, I'm worth $15 billion! Here's a more detailed look at Marsland's Facebook costume, a ready hit at the San Francisco Halloween party he attended. "I've found that the best Halloween costumes reference pop-culture, are creative, and are interactive," he said. "Facebook was all three of those, with a tech swing to it." By the evening's end, Marsland's Polaroid "wall" was up nearly 40 new friends.