Answered in another newsgroup. Why you should NOT multipost:
• Net traffic is reduced: Only one copy of your article
needs to flow to the thousands of Usenet servers. And the
thousands of people who read both groups have to download only
one copy, not two.
• Your time is saved: You can look in one place to see all
replies.
• Other people's time is saved: When you multipost, people
in one group can't see answers in the other group, which results
in lots of duplication.
• Multiposting annoys lots of people. Some will tell you
about it; some will keep silent but put you in their kill files,
which means you lose the benefit of their answers to your
questions, forever.
