It's my understanding that it will only appear in your blog elsewhere if you create a new forum thread, because that generates a new top level post. If you interact with existing forum threads, then those are all comments that will not impact your blog feed elsewhere, they'll just show up in your comment and reply activity.

This is all new territory so I'm hoping we can explore the pros and cons together and find great ways to use these tools! Thanks so much for your support and enthusiasm!