Come to think of it, can you use #RSS to syndicate other people's posts? Like could I create an RSS feed called "articles about breakfast" and put in there all the articles about breakfast that I find? Kind of like a Forward or Retweet / Boost but for rss?
(I'm asking but I can't imaging RSS doesn't support that use-case?)
It could become a way for blog posts to get reach without resorting to the messiness of social media/migroblog intermediary.