"Wouldn't it be just wonderful if this 8th wonder of the world created by Intuit indicated who you were responding to when you are trying to respond to a specific post?"

When you click the Reply, it's supposed to indent under the reply you replied to. I know that if you want to use the "at" sign, the first offering is that replying-to replier's username, such as @IRonMaN comes up right now for me, since I clicked the Reply button under your reply.

I even scroll up to find a reply that is the specific reply I want to reply to, but that doesn't mean it will make sense in the stream of conscientiousness that is this display format.

I don't know if it is better to view this sort of forum in chronological sequence or outline sequence. I've seen them with the nested outline brackets to the left, and while that is helpful for understanding the relationship, it makes it harder to spot new content.

Have you ever looked at the titles of the replies? I don't bother to update it, and sometimes in a search result in list view, the title of your reply (copied from where you hit Reply) is really funny.