BuddyPress.org

No, what I want is this :

http://img822.imageshack.us/img822/7476/replyg.jpg

And answering Your question: “Any Reason you don’t want subsequent replies?”
It get pretty messy when there is a post, and a reply to it, and then another one to that reply , and then reply to reply to reply of comment….You know where I’m heading to…. I want to keep it simple as for example facebook does.