Seth Godin's book Purple Cow argues that businesses need to create remarkable products to stand out. Ordinary or "brown cow" products are invisible to customers who are too busy to listen to advertising. The book provides rules for marketing, such as taking risks and creating products that early adopters will seek out and spread through word of mouth. However, being remarkable also means facing criticism. Godin says small businesses have more freedom to take risks and should avoid compromising to appeal to mass markets. The key is finding an obsessed niche of "sneezers" who will spread ideas about a remarkable product.