This is an excellent design and implementation. I'll be using this from now on :) I have one request though. when a comment is collapsed it should also collapse the child comments just like a tree. Maybe you can add reply, upvote, downvote support too. btw I would pay for this app. Thanks
Collapsing comment is not for thread, but it is side effect of the feature. If you visit the same thread again after 5 mintues. It will only display new comments since your last visit. All other comments are collapsed by default.
I am not sure the best way to implement comment collapse with thread collapse.
