Bob Watts, the talented and kind art director of Salon.com, died yesterday morning after a long battle with cancer.I didn't know Bob well, but had the good fortune to work with him for the two years I was at Salon. He was immensely kind, compassionate, and a little bit arch. When I would see him, his wife and now teenage daughter at the Salon retreats up in California's Gold Country, I was always struck by the palpable sense of love they all shared.The world lost a good soul yesterday.