There's a discussion on the
#indiewebIRC channel (on Freenode) about whether people post to channels like that in order to get wider audiences for what they write, and whether this is in opposition to the indieweb ideal of being able to post on separate sites but still carry on a conversation. I'd not really thought about it clearly before, but I think that's why I don't like posting to channels like that. I like contributing to wikis, where central texts undergo collaborative continued editing, but for discussion it seems that it should be possible to post on one's own site and still be part of the greater to-and-fro. I can't quite do so (for example, with this post) because I've not got webmentions working here yet, but I think the theory is all there. To reply to someone someone else has said (anywhere) I can just make a post here and point it to their URL.