This should be a HN feature. Ability to submit TL;DRs to a post in a way similar to commenting. An option to always show the top voted TL;DR, and a link to dive

This should be a HN feature. Ability to submit TL;DRs to a post in a way similar to commenting. An option to always show the top voted TL;DR, and a link to dive in to other interpretations. A wiki-style service for TL;DRs could work too.