Judging by some of the comments under my last post, I wasn't entirely convincing when I said that, in some circumstances, introducing a subbing stage into the journalistic process can damage the user experience.
Let me try to explain what I mean.
The circumstances I am thinking of are those where the journalist and audience are interacting in a conversational way, in real-time (or close to it) - for example in a discussion forum, a live chat or a blog discussion. In these circumstances, having every word the journalist writes checked and possibly re-written by a sub can interfere with the dynamic.