[0xabe]

If you want to interact, the way you do that is to own your own blog where you post your “reply” and use a trackback[0] url. Then the conversation is even freer and you’re in control of your content. Don’t forget to create your own RSS feed for others.

[0] https://en.m.wikipedia.org/wiki/Trackback

[karatinversion]

This is another way of achieving the same end, yes. Like any such solution, it requires both author and commenter to use software supporting it, which Twitter does not.