Wanted: A twitter/comment plugin combo

When I post an entry (such as this one), I have a wordpress plugin (called Twitter Tools) that sends out a tweet (meta-linking update: like this) telling everyone that I’ve posted something. To manage comments, I use Disqus, which, amongst other systems, allows people to authenticate at twitter to then post a comment. Which is nice, and I like it.

But! Sometimes, seemingly more often than not, people will @-reply to me on twitter with a comment on my post. And I will often @-reply someone else about their post (that was announced on twitter). So here’s what I want:

  1. When I post an entry that sends a tweet, capture and store the ID of the tweet that I sent.
  2. Whenever someone @-replies or retweets that stored tweet, aggregate that to the comment-section of my blog, so that the entire related conversation is visible in one place.
  3. For bonus points, given that everything I post is also pushed as a post to Facebook & everything I tweet ends up as a status update on there too, it would be great to extract any responses to those as well, in the comments section of my site.

Does anyone know if such a thing exists?