A lot of time it's a judgement call. If an item is easily identifiable as from a blog, we'll move it to the bloggers forum. If it's an inane vanity, we may move it to chat or pull it outright. Some vanity threads, when properly posted as vanities, may get left in the news/vanity topic.
Not always.
Some vanity threads, when properly posted as vanities, may get left in the news/vanity topic.
I'm specifically talking about blog content where the blog name and URL are posted for all to see.