Reddit is vote based so would you include that too? HN also has advertising (it has hiring ads for ycombinator companies put in as mostly organic-looking posts with no [ad] tag).
I don't want to get into an argument about what an ad is, but I think we all understand what the difference of ad driven algos on the social platforms vs hiring blogs, Who's Hiring, etc on this platform.
Also, I just never have liked Reddit.