Other than the fact that flat comments are easier to scroll through (for most i guess), I think flat comments allow you to comment overall in the forum which co

Other than the fact that flat comments are easier to scroll through (for most i guess), I think flat comments allow you to comment overall in the forum which could mean your response can be applied to One or more posts at the same time. Usually a forum is meant for that. If you focus too much on one-on-one conversation, then may be staggered comments make sense.