I think they go into 2 categories:
- Genuine list, even if there's a Wikipedia page that answers the question, they then to become a poll because of the site's mechanic.
Here's my story, I posted my question on meta stack exchange and my comment Dori's post after I saw this question about List of good cyberpunk novels. Which is the worst example of a poll I have seen so far. I mean, It's stated in the question's text that you should "Vote up answers containing novels you think are good.". Anyway, this question got closed pretty fast, which is a good sign.
Then, (yes, AFTER I made the above actions, it's not my first contradiction.) I posted my own list question about works feature the development of a self-aware AI?. I even tagged it [list]! However, I was feeling it was not as damageable as the above (Which is not an excuse).
And now I know why, this question have a purpose.This is not a list, this is a reading recommendation request. (I just changed the tag on my question.)
Now, the question we need to answer is Are “recommend me” questions allowed?. So far it seem yes, but this may change on the future. some site allow that, some not. There's many reason for that and I recommend to check some of the discussion on that topic on the Gamming meta