Flyertalk has grown to the point where there are so many forums that people don't always know where to post things, and sometimes there is a huge overlap between two or more forums with exactly the same posts.
Having specific obvious forums goes a long way to help , and nothing is more specific than an airline or a hotel. To me this is a easy one, of course there should be a forum specific to Iberia. It's so much easier to point somebody in the right direction when it's an obvious direction.