[stavros]

Under this definition, everything is gambling, including commenting on HN (will I get upvoted or downvoted?).

[pocksuppet]

There used to be forums without voting. It was discovered that forums with voting attract more engagement because of the emotions produced by the voting.

[BarryMilo]

It also used to be that reddit comments were the epitome of quality in their time, much closer to current HN if not better. I attributed that to the voting mechanism; clearly I was mistaken.

[sirl1on]

Everything is modeled after gambling nowadays to nudge and gamify the user experience to a desired outcome

[stavros]

If your definition of "gambling" is "things with uncertain outcome", then there's nothing in life that's not gambling.