Viral marketing refers to marketing techniques that use social networks to produce increases in brand awareness or sales through self-replicating viral processes like viruses. One example is Hotmail appending ads to outgoing emails from users. For a message to spread virally, it must appeal to individuals with high social networking potential who will present and spread it to others quickly. The environment is also crucial, as small changes can lead to huge results. Viral marketing may take various forms like videos, games, images or text messages. The goal is to create viral messages that high social individuals will spread to their networks.