You should see r/movies late at night. I don't follow many subs, so it completely dominates my frontpage "best" sort with 20 out of 25 posts being "What movies did everyone hate but you think are top 10?" or "Name a movie in which <very specific thing>"

It's always completely useless to comment in them because the OP never replies back and so I'm forced to switch to the "hot" sort.

I have no idea how you prevent it.

edit: Here's an example of my frontpage right now, and it's much worse at night