When the same character is active in two separate places at the same time. Cross-posting is not permitted in Nepta, and is considered bad form in many role-playing communities.
To post a single message simultaneously to multiple newsgroups or discussion groups. Gratuitous cross-posting is considered poor Netiquette.
Posting a single copy of a Usenet article to several newsgroups at the same time by putting their names in the Newsgroups line. More efficient than posting multiple individual copies.
A method by which you can post a single article to multiple newsgroups.
Posting an article to more than one Usenet newsgroup.
This is the practice of posting a message in more than one Internet newsgroup, done when the message's creator believes the topic worthy of interest by more than one newsgroup. Cross-posting can be rewarding when the message's creator is selective enough to post the message only where appropriate, and not in a way that arrogantly blankets myriad newsgroups. When these mores are violated, the user quickly finds himself engulfed in flames.[See Also: Flame, Newsgroup
Sending a message to more than one list at the same time. This is not a recommended practise on Mailtalk as your message may get mistaken for spam.
The act of posting the same message to more than one group or list.