The 'retweet with comment' feature on Twitter reminds me of that flow in federated wiki where you 'extend/patch' someone else's idea on your own space, and if they are notified they can choose to fold it back into theirs. In microblogging it makes to so easy to connect disparate ideas and move away from the discrete unrelated blurts this system is designed to produce. I'm curious if there an activitypub client that supports this.
Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.