Brian Cryer's Glossary of IT Terms with Links

Cross-post

Cross-post

To post the same message to two or more newsgroups at the same time.

When cross-posting, a single message is posted to two or more newsgroups at the same time. The message has tagged with it which newsgroups it was posted to, which allows any reply to be sent to the same set of newsgroups. This means that any reply will be visible in each of the newsgroups that the message was originally sent to.

cf multi-post.