This vast use of the Internet changes the scope of harm associated with defamation. Communications on the Internet are more pervasive than print. For this reason, they have tremendous power to damage a person's reputation. Once a message enters cyberspace, millions of people worldwide can gain access to it. Any posted message or report can be republished by printing, or more commonly, by forwarding it instantly to a different location, leading to potentially endless replication. The power to defame others over the Internet is extraordinary.
Internet Publications and Defamation: Why the Single Publication Rule Should Not Apply, 32 Golden Gate U. L. Rev.