I needed to check up myself to get exact which threads that doesn't count the posts.
Only the offtopic board has boards that doesn't count posts. Here's an overlook.
Forum Games(No count)
Praise(Count)
Media(No Count)
Art Galleries(Count)
Commissions(Count)
Trades(Count)
Requests(Count)
Literature(Count)
Stories(Counts)
Poems(Counts)
Off topic Roleplay(No Count)
Member of the Month(Count)
I thought more boards didn't count posts, but it seems like it did anyway.