[friendlybus]

>I think one of the things that makes HN and Reddit very different, is that the content is not personalized and tailored to maximize user engagement. Facebook seems to constantly show me things that make me more upset or concerned or outraged about something.

This really depends on whether or not you set up your own account with subreddits in reddit. It is just as personalized and outrage generating as Facebook if you self-subscribe to it.

[grumdan]

Fair enough, though the separation into categories possibly helps somewhat. If someone is reading r/some-topic-they-are-interested in, it wouldn't also show them stories about, say, cops shooting unarmed civilians in the back 67 times, in between the topic-specific content.

This is probably different on the main page though.