. I know lists are personal and I can certainly be guilty of some of these item. I've seen a similar list once, so idea isn't entirely original, but the list is.
1. Copy. No credit given,but it's clear they have regurgitated someone elses list. Top 10's okay, but after top 20, come on.
2. Incorrect Lists "no one has seen" or "no one likes", but had big box office or high score on Rotten Tomatoes.
3. Pretentious Lists. Lists are personal and can provide a sense of pride, but some the OP is telling you how much better they are.
4. Lists with a number, but have more.
5. Guests with 100% and it's just no way.
6. OP listing short stories/videos as novels/movies. Go ahead and make a separate list for those items.
7. Specific dates. Can be cool for nostalgia, but when it's done over and over...
8. No question, or makes no sense.
9. Ask for only one answer.
10. So obscure they're designed for low results. Lists are personal, but some you can tell.