How about a function that allows the user to collect interesting contributions over a day and then publish them in the form of a digest or a link list? At the moment it is so that at least with me 30 - 50% of the contributions are only passed on and that comes then even several times. With such a function, the stream of the individual could become much clearer.
But that implies some kind of engine which could say to the user what is seeing right now, something like twitter?
it should give the idea of surveillance to the paranoid ones, but if that could be focused “most shared post in the last hour” “more commented posts” “more liked posts” or some public info it will be great n-n