I understand what you're asking for the replies. The only issue I have with it is that this makes it seem like you're replying to a specific post, which implies a threaded topic. There's no such thing here. I'm afraid it would end up being confusing to the user. How would I show the # of comments on such an item? What about "View all comments"? Let's say I skip those, and I just allow a reply box. That allows the user to respond to something out of context. For example, what if the stream shows post #36? I don't see the posts before and I don't see the posts after, so I just reply... and perhaps my reply makes no sense whatsoever in the context of the topic. Thoughts?