More importantly, though, feed readers put your subscriptions under your control. There’s no risk that the administrator of an RSS feed sells your details to spammers, or accidentally leaks them like the aforementioned world renowned expert on account information leaks, because there’s no administrator. If you decide you don’t want to see a particular feed any more, you just instruct your reader to stop fetching it. There’s no sending of mail or clicking of unsubscribe links. Nothing changes in the content creator’s system; they don’t even need to know it happened. — Really Simple Syndication