Short for network etiquette, the code of conduct regarding acceptable online behavior.
The term netiquette is commonly used in reference to popular forms of online communication, including email, forums and chat.
While some netiquette issues are technical in nature, all fundamentally concern how people relate to each other. Once the technical nuances are grasped and abstract concepts are understood, online etiquette is not much different than offline etiquette.
What does netiquette have to do with marketing?
It is essential to have a good understanding of acceptable ways to communicate with potential customers. In the worst-case scenario, violating the code of conduct for a community (ex. using spam) may get you banned from the community. It is possible to be banned from forums, search engines, ISPs and webhosts.
albion.com : netiquette
includes the rules, plus a quiz
RFC Editor (October 1995)