My first (snarky) thought is "Oh cool, yet another less 'simple' reinvention of RSS" (which has existed for two decades). More seriously, though, I don't want

My first (snarky) thought is "Oh cool, yet another less 'simple' reinvention of RSS" (which has existed for two decades). More seriously, though, I don't want to "manage" newsletter subscriptions -- nor will I. If I start getting too many or they start piling up without being read or whatever, my "one neat trick" is to simply click "Unsubscribe", forget about it, and move on.