Did you mean that my summary was a title, not a summary? I didn't quite understand "described the function of the title". Right now I'm thinking only poorly wr

Did you mean that my summary was a title, not a summary? I didn't quite understand "described the function of the title". Right now I'm thinking only poorly written comments and off-topic threads would benefit from being summarized. A good comment starts with attracting attention and interest, and a summary would destroy that. A poorly written comment though, it might be verbose and chatty, and it might make the discussion stray off-topic. Then, instead of just collapsing a not-so-popular off-topic thread and showing the text "Click to view 33 comments", one could show a summary: "Click to view a suggestion to summarize threads and a discussion about if doing so makes sense (33 comments)". Or "Click to view a joke (5 comments)". (I agree this is getting complicated for long threads that branches off in many directions.)