In one case, a law firm's efforts to advertise over the Usenet prompted one young man in Norway to launch a cancelbot, a message that automatically destroyed the firm's transmissions every time it sent out an advertisement. He was applauded by other Usenet participants, although his actions did raise concerns about wider use of arbitrary censorship. Do not look at other people's files or use other systems without permission. Remember that on-line communications lack the nuances of tone, facial expression, and body language. Try to spell correctly and to use good grammar.
Capital letters are the on-line equivalent of shouting.
Personal attacks or complaints are called flaming. People who become too obnoxious can be banned from a system or simply ignored. The Net User Guidelines and Netiquette provides basic guidelines in netiquette to users at Florida Atlantic University. It also includes a bibliography on proper conduct. Ethics and the Internet outlines the principles of responsible use put forth by the Internet Activities Board.