Eh, it's really difficult to say. Other Writing is mainly meant for stories, not for something like "Look what happened to me today!", since that could go in Other Chat. OW is more for people to post their writing and get comments on how to improve their writing. When people post journal entries, I see it as more of a way to share what happened to them and their thoughts on a subject, which falls under OC, I would assume.
It's tricky, and the rules don't say that, so I can understand the amounts of confusion. My hands are tied right now in changing that though.