I think it's impossible to compare Slashdot to HN, since nearly every story on Slashdot gets a mod-created title and mod-created tagline. In comparison, HN is

I think it's impossible to compare Slashdot to HN, since nearly every story on Slashdot gets a mod-created title and mod-created tagline. In comparison, HN is more emergent, less filtered, and fueled more by dopamine than by any other kind of motivation.