I see the name is copywriting, so is it only limited to discussions about creating textual sales letters? Or is it inclusive of content creation in general, in terms of articles, videos, audio etc?
This forum was mainly created for discussing copywriting, but you could definitely post something about articles here. Not a sales thread advertising your services mind you, but something general that will benefit the writers' community as a whole. For advertising your services, you need to go to the BST.
You can discuss writing copy or content here. You shouldn't be discussing things like article spinners for article marketing (which belongs in marketing), videos, or audio creation (unless you're talking about writing the scripts for those things). For the record, copywriting covers far more than sales letters - they're just one small part of it.