I'm not clear on what double posting really is.

1 - Is it posting twice in a row in thread?  As Shorena already mentioned, I also don't have a problem with that, when it is addressing different points in the same thread, or to break up a long post.

OR

2 - Is it posting the same information (even exact duplicate) in 2 different threads?

Guess I should ask more clearly: if both, either or neither (1 & 2) are allowed?

I've seen a user this week, do some back to back posts, that were really odd - just quoting previous posts he'd made in the same thread.  That isn't appropriate, right?  (necro-posting)  If not, what is the best way to bring it to the attention of a moderator?

Thanks.