This paper about sharing web content is a good read. They created a browser extensions named FeedMe, where:
the user mediates recommendations not for themselves, but on behalf of someone they know… FeedMe’s users act as gatekeepers for someone else…
One of their conclusions really resonated with me:
Link Sharing Is Burdensome When It Is a Repetitive Firehose
That feels very true for me. It’s a good paper, give it a read.