What's the advantage of cross posting?

I can add news groups to my reply, easy enough.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Doug Miller" wrote in message
. ..

Next time you want to post the same thing in two or more groups, cross-post
it instead of multi-
posting. (If you don't understand the difference, Google it.)

I answered you in the other group.