In the early days, people posted rather lengthy articles/editorials about what they were doing, thinking, feeling, who they were, etc. On Livejournal, then on blogs, even in the early days of Facebook. But those are mostly gone now, reduced to tweet-sized chunks and making up only a fraction of the feed. Instead, people mostly just reshare, reblog, retweet, copy memes, add links, sometimes photos, checkin somewhere, etc. A newsletter with all of that filtered out, and only the actual content posts would usually be empty.

But if someone could start something like that and start a trend of people actually communicating on a large scale, and making it as digest/newspaper style, that could be pretty interesting.