That summary reads like an article. Since I rarely RTFA, why would I want to read the summary?
That's irony/sarcasm, right? Because reading, critical thinking, and emitting reasoned discourse is what all this is about.
One of the main problems is the Web 2.0 system. Either you have a feed and get every short comment as it comes -- but that's if you want to context switch for every single one-line comment. Otherwise, you read a web page, and once you're done you're not going back, even if an interesting comment comes in a few seconds later. If you come later to the party, you get to read all the good comments, but no-one will read yours. StackExchange is a little better than that, in that people involved get a note that a comment has been made (but unless I've missed something, I can't select a topic I haven't participated in so that I get all the updates).
I am nostalgic for the days of News, where you selected a general topic, killed threads or subthreads that did not interest you, pre-selected ones that did, and expected pages of text in an article, addressing one by one each point made in the previous article, and expected people to reply. That type of discourse has migrated to mailing lists . . . wouldn't it be wonderful to combine that with social upvotes/downvotes/moderation?