So, I’ve been using Known to post to post status updates for a little while now, the latest of which you can see in the sidebar on the right hand side (which is displayed using a WordPress plugin I wrote).
Known also lets you reply to messages directly from your site (replying to other sites that enable webmentions, twitter, or even Github), but unfortunately, while Known has a configurable timeline (so you can choose what content to display by default) the standard Known status message plugin doesn’t differentiate between posts and replies.
Because it was bugging me having my timeline filled with reply messages to various places (which were out of context for most people) I wrote a patch for the Status plugin that will allow you to differentiate between messages and replies in both the content type selector and the homepage configuration tool.
My timeline now shows everything by default, except replies (you can still see those if you select “All Content” from the selector), and this is also reflected in my sidebar!
I’ve submitted this as a pull request upstream which has yet to be merged, but in the mean time you’ll need to apply the patch from my development fork.