VANCOUVER - After years of sending friends anti-Christmas cards, one of which featured a homeless Santa and another battered child angels, Valerie and Trevor Williams decided to "go big" this year. The result can be seen on a billboard looming over the Pat Bay Highway near Victoria, where commuters, rushing no doubt to buy gifts, are faced with this stark message: "Gluttony. Envy. Insincerity. Greed. Enjoy Your Christmas." Mrs. Williams, a 33-year-old Women's Studies student at the University of Victoria, and her husband, a 37-year-old aeronautical engineer, are on a campaign against what they see as the rampant consumerism and...