There are quite a few very poor questions (all being put on hold quite soon after they've been asked), such as [this][1]. These questions stick around unless they get deleted by the OP (which they almost never do).

Wouldn't it be nice to implement a mechanism that automatically removes questions that are on hold and have received a sufficient number of down-votes (say, 4 of them)?


  [1]: https://mathoverflow.net/questions/232494/when-is-mathbbr-homeomorphic-to-mathbbr2