This is interesting, actually, I had noticed the same thing. I've been downvoting particular topics from their 'briefing' section and it seems to cause... well,

This is interesting, actually, I had noticed the same thing. I've been downvoting particular topics from their 'briefing' section and it seems to cause... well, nothing to happen. I asked, and they said it learns over time, but no matter how much you downvote something, it seems to do it anyway. Sigh.