Crossposting

Definition
Crossposting is the act of posting the same message to multiple forums, mailing lists, blogs or newsgroups.

Overview
Crossposting can be helpful if the message is of interest to a larger audience. However, crossposting to groups that are irrelevant to the message posted could be considered spamming. Moreover, excessive crossposting is generally considered bad form because it multiplies traffic without adding any new content. In the extreme case, if all messages were crossposted to every group, then every group would look exactly the same. A crossposter can minimize this problem by specifying that all responses be directed to a single group.