Joe, I tweaked the received response to make it a "reply" instead of a "mention". You could have forced it to do this by adding a semantic microformat class="u-in-reply-to" on the link to my post and the Semantic Linkbacks plugin on my end would have parsed it and displayed it as a native comment instead of a facepiled avatar "mention". If you want to go all-in, the Post Kinds plugin will add some of these sorts of microformats for you automatically to allow you to bookmark, reply, etc. to posts (as well as give you a bit of a reply context if you like). It's a bit like the old WordPress Formats on acid, but takes the social media-type posts to their logical conclusion.