I was find out that there is two replacement section in forums and post.

May I know what is the different?

In "Forums" the replacement is only appliead to message when posting to that specific forum.

In "Post" it's general replacements which are appliead to all messages to all forums.

lol

the replacement in "Forums" is consider reasonable.

but I think the replacement in "Post" is useless.
since it involve all forums, if that guy don't want that "word", why he still want to insert that "word" into the template?

Maybe you should consider about "Replacement" for "Group"
different group have it own replacement etc

General replacements was a suggestion by users. So someone needs it.

Will think about replacement per group, by I doubt I'll make it, just use replacements per forum.